drivers/tty/serial/ucc_uart.c:264:21: sparse: sparse: incorrect type in argument 1 (different address spaces)

From: kbuild test robot
Date: Wed May 27 2020 - 10:46:10 EST

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Hi Rasmus,

First bad commit (maybe != root cause):

tree: .config.gz Description: application/gzip href="04297.html"> Liang, Kan: "Re: [PATCH] perf/x86/intel/uncore: Fix oops when counting IMC uncore events on some TGL" Eric W. Biederman: "Re: [PATCH] proc/base: Skip assignment to len when there is no error on d_path in do_proc_readlink." href="date.html#04296">[ date ] [ thread ] [ subject ] [ author ] rnel.org/pub/scm/linux/kernel/git/torvalds/linux.git">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
8
soc: fsl: qe: remove PPC32 dependency from CONFIG_QUICC_ENGINE
(attached as .config)
dirty
146b298a9cffe5
linux build tree
-D__CHECK_ENDIAN__'
tag as appropriate
x>
>>)
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void const volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void const volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: symbol 'qe_uart_set_mctrl' was not declared. Should it be static?
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void const volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void const volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void const volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void const volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void const volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void const volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void const volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void const volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void const volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be32 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be32 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be32 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be32 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ucc_uart_pram *uccup @@ got struct ucc_uart_pram [noderef] <asn:2> *uccup @@
expected struct ucc_uart_pram *uccup
got struct ucc_uart_pram [noderef] <asn:2> *uccup
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got unsigned char * @@
expected void volatile [noderef] <asn:2> *addr
got unsigned char *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got unsigned char * @@
expected void volatile [noderef] <asn:2> *addr
got unsigned char *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be32 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be32 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got unsigned char * @@
expected void volatile [noderef] <asn:2> *addr
got unsigned char *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got unsigned char * @@
expected void volatile [noderef] <asn:2> *addr
got unsigned char *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be32 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got unsigned char * @@
expected void volatile [noderef] <asn:2> *addr
got unsigned char *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be32 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got unsigned char * @@
expected void volatile [noderef] <asn:2> *addr
got unsigned char *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got unsigned char * @@
expected void volatile [noderef] <asn:2> *addr
got unsigned char *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got unsigned char * @@
expected void volatile [noderef] <asn:2> *addr
got unsigned char *
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@
expected void volatile [noderef] <asn:2> *addr
got restricted __be16 *
sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ucc_uart_pram [noderef] <asn:2> *uccup @@ got struct ucc_uart_pram * @@
expected struct ucc_uart_pram [noderef] <asn:2> *uccup
got struct ucc_uart_pram *
Timur Tabi 2008-01-15 248
Timur Tabi 2008-01-15 249 /*
Timur Tabi 2008-01-15 250 * Return 1 if the QE is done transmitting all buffers for this port
Timur Tabi 2008-01-15 251 *
Timur Tabi 2008-01-15 252 * This function scans each BD in sequence. If we find a BD that is not
Timur Tabi 2008-01-15 253 * ready (READY=1), then we return 0 indicating that the QE is still sending
Timur Tabi 2008-01-15 254 * data. If we reach the last BD (WRAP=1), then we know we've scanned
Timur Tabi 2008-01-15 255 * the entire list, and all BDs are done.
Timur Tabi 2008-01-15 256 */
Timur Tabi 2008-01-15 257 static unsigned int qe_uart_tx_empty(struct uart_port *port)
Timur Tabi 2008-01-15 258 {
Timur Tabi 2008-01-15 259 struct uart_qe_port *qe_port =
Timur Tabi 2008-01-15 260 container_of(port, struct uart_qe_port, port);
Timur Tabi 2008-01-15 261 struct qe_bd *bdp = qe_port->tx_bd_base;
Timur Tabi 2008-01-15 262
Timur Tabi 2008-01-15 263 while (1) {
Rasmus Villemoes 2019-11-28 @264 if (qe_ioread16be(&bdp->status) & BD_SC_READY)
Timur Tabi 2008-01-15 265 /* This BD is not done, so return "not done" */
Timur Tabi 2008-01-15 266 return 0;
Timur Tabi 2008-01-15 267
Rasmus Villemoes 2019-11-28 268 if (qe_ioread16be(&bdp->status) & BD_SC_WRAP)
Timur Tabi 2008-01-15 269 /*
Timur Tabi 2008-01-15 270 * This BD is done and it's the last one, so return
Timur Tabi 2008-01-15 271 * "done"
Timur Tabi 2008-01-15 272 */
Timur Tabi 2008-01-15 273 return 1;
Timur Tabi 2008-01-15 274
Timur Tabi 2008-01-15 275 bdp++;
2013-10-08 276 }
Timur Tabi 2008-01-15 277 }
Timur Tabi 2008-01-15 278
Timur Tabi 2008-01-15 279 /*
Timur Tabi 2008-01-15 280 * Set the modem control lines
Timur Tabi 2008-01-15 281 *
Timur Tabi 2008-01-15 282 * Although the QE can control the modem control lines (e.g. CTS), we
Timur Tabi 2008-01-15 283 * don't need that support. This function must exist, however, otherwise
Timur Tabi 2008-01-15 284 * the kernel will panic.
Timur Tabi 2008-01-15 285 */
Timur Tabi 2008-01-15 286 void qe_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
Timur Tabi 2008-01-15 287 {
Timur Tabi 2008-01-15 288 }
Timur Tabi 2008-01-15 289
Timur Tabi 2008-01-15 290 /*
Timur Tabi 2008-01-15 291 * Get the current modem control line status
Timur Tabi 2008-01-15 292 *
Timur Tabi 2008-01-15 293 * Although the QE can control the modem control lines (e.g. CTS), this
Timur Tabi 2008-01-15 294 * driver currently doesn't support that, so we always return Carrier
Timur Tabi 2008-01-15 295 * Detect, Data Set Ready, and Clear To Send.
Timur Tabi 2008-01-15 296 */
Timur Tabi 2008-01-15 297 static unsigned int qe_uart_get_mctrl(struct uart_port *port)
Timur Tabi 2008-01-15 298 {
Timur Tabi 2008-01-15 299 return TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
Timur Tabi 2008-01-15 300 }
Timur Tabi 2008-01-15 301
Timur Tabi 2008-01-15 302 /*
Timur Tabi 2008-01-15 303 * Disable the transmit interrupt.
Timur Tabi 2008-01-15 304 *
Timur Tabi 2008-01-15 305 * Although this function is called "stop_tx", it does not actually stop
Timur Tabi 2008-01-15 306 * transmission of data. Instead, it tells the QE to not generate an
Timur Tabi 2008-01-15 307 * interrupt when the UCC is finished sending characters.
Timur Tabi 2008-01-15 308 */
Timur Tabi 2008-01-15 309 static void qe_uart_stop_tx(struct uart_port *port)
Timur Tabi 2008-01-15 310 {
Timur Tabi 2008-01-15 311 struct uart_qe_port *qe_port =
Timur Tabi 2008-01-15 312 container_of(port, struct uart_qe_port, port);
Timur Tabi 2008-01-15 313
Rasmus Villemoes 2019-11-28 314 qe_clrbits_be16(&qe_port->uccp->uccm, UCC_UART_UCCE_TX);
Timur Tabi 2008-01-15 315 }
Timur Tabi 2008-01-15 316
Timur Tabi 2008-01-15 317 /*
Timur Tabi 2008-01-15 318 * Transmit as many characters to the HW as possible.
Timur Tabi 2008-01-15 319 *
Timur Tabi 2008-01-15 320 * This function will attempt to stuff of all the characters from the
Timur Tabi 2008-01-15 321 * kernel's transmit buffer into TX BDs.
Timur Tabi 2008-01-15 322 *
André Goddard Rosa 2009-11-14 323 * A return value of non-zero indicates that it successfully stuffed all
Timur Tabi 2008-01-15 324 * characters from the kernel buffer.
Timur Tabi 2008-01-15 325 *
Timur Tabi 2008-01-15 326 * A return value of zero indicates that there are still characters in the
Timur Tabi 2008-01-15 327 * kernel's buffer that have not been transmitted, but there are no more BDs
Timur Tabi 2008-01-15 328 * available. This function should be called again after a BD has been made
Timur Tabi 2008-01-15 329 * available.
Timur Tabi 2008-01-15 330 */
Timur Tabi 2008-01-15 331 static int qe_uart_tx_pump(struct uart_qe_port *qe_port)
Timur Tabi 2008-01-15 332 {
Timur Tabi 2008-01-15 333 struct qe_bd *bdp;
Timur Tabi 2008-01-15 334 unsigned char *p;
Timur Tabi 2008-01-15 335 unsigned int count;
Timur Tabi 2008-01-15 336 struct uart_port *port = &qe_port->port;
2009-09-19 337 struct circ_buf *xmit = &port->state->xmit;
Timur Tabi 2008-01-15 338
Timur Tabi 2008-01-15 339 bdp = qe_port->rx_cur;
Timur Tabi 2008-01-15 340
Timur Tabi 2008-01-15 341 /* Handle xon/xoff */
Timur Tabi 2008-01-15 342 if (port->x_char) {
Timur Tabi 2008-01-15 343 /* Pick next descriptor and fill from buffer */
Timur Tabi 2008-01-15 344 bdp = qe_port->tx_cur;
Timur Tabi 2008-01-15 345
Rasmus Villemoes 2019-11-28 346 p = qe2cpu_addr(be32_to_cpu(bdp->buf), qe_port);
Timur Tabi 2008-01-15 347
Timur Tabi 2008-01-15 348 *p++ = port->x_char;
Rasmus Villemoes 2019-11-28 @349 qe_iowrite16be(1, &bdp->length);
Rasmus Villemoes 2019-11-28 350 qe_setbits_be16(&bdp->status, BD_SC_READY);
Timur Tabi 2008-01-15 351 /* Get next BD. */
Rasmus Villemoes 2019-11-28 352 if (qe_ioread16be(&bdp->status) & BD_SC_WRAP)
Timur Tabi 2008-01-15 353 bdp = qe_port->tx_bd_base;
Timur Tabi 2008-01-15 354 else
Timur Tabi 2008-01-15 355 bdp++;
Timur Tabi 2008-01-15 356 qe_port->tx_cur = bdp;
Timur Tabi 2008-01-15 357
Timur Tabi 2008-01-15 358 port->icount.tx++;
Timur Tabi 2008-01-15 359 port->x_char = 0;
Timur Tabi 2008-01-15 360 return 1;
Timur Tabi 2008-01-15 361 }
Timur Tabi 2008-01-15 362
Timur Tabi 2008-01-15 363 if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
Timur Tabi 2008-01-15 364 qe_uart_stop_tx(port);
Timur Tabi 2008-01-15 365 return 0;
Timur Tabi 2008-01-15 366 }
Timur Tabi 2008-01-15 367
Timur Tabi 2008-01-15 368 /* Pick next descriptor and fill from buffer */
Timur Tabi 2008-01-15 369 bdp = qe_port->tx_cur;
Timur Tabi 2008-01-15 370
Rasmus Villemoes 2019-11-28 371 while (!(qe_ioread16be(&bdp->status) & BD_SC_READY) &&
Timur Tabi 2008-01-15 372 (xmit->tail != xmit->head)) {
Timur Tabi 2008-01-15 373 count = 0;
Rasmus Villemoes 2019-11-28 374 p = qe2cpu_addr(be32_to_cpu(bdp->buf), qe_port);
Timur Tabi 2008-01-15 375 while (count < qe_port->tx_fifosize) {
Timur Tabi 2008-01-15 376 *p++ = xmit->buf[xmit->tail];
Timur Tabi 2008-01-15 377 xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
Timur Tabi 2008-01-15 378 port->icount.tx++;
Timur Tabi 2008-01-15 379 count++;
Timur Tabi 2008-01-15 380 if (xmit->head == xmit->tail)
Timur Tabi 2008-01-15 381 break;
Timur Tabi 2008-01-15 382 }
Timur Tabi 2008-01-15 383
Rasmus Villemoes 2019-11-28 384 qe_iowrite16be(count, &bdp->length);
Rasmus Villemoes 2019-11-28 385 qe_setbits_be16(&bdp->status, BD_SC_READY);
Timur Tabi 2008-01-15 386
Timur Tabi 2008-01-15 387 /* Get next BD. */
Rasmus Villemoes 2019-11-28 388 if (qe_ioread16be(&bdp->status) & BD_SC_WRAP)
Timur Tabi 2008-01-15 389 bdp = qe_port->tx_bd_base;
Timur Tabi 2008-01-15 390 else
Timur Tabi 2008-01-15 391 bdp++;
Timur Tabi 2008-01-15 392 }
Timur Tabi 2008-01-15 393 qe_port->tx_cur = bdp;
Timur Tabi 2008-01-15 394
Timur Tabi 2008-01-15 395 if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
Timur Tabi 2008-01-15 396 uart_write_wakeup(port);
Timur Tabi 2008-01-15 397
Timur Tabi 2008-01-15 398 if (uart_circ_empty(xmit)) {
Timur Tabi 2008-01-15 399 /* The kernel buffer is empty, so turn off TX interrupts. We
Timur Tabi 2008-01-15 400 don't need to be told when the QE is finished transmitting
Timur Tabi 2008-01-15 401 the data. */
Timur Tabi 2008-01-15 402 qe_uart_stop_tx(port);
Timur Tabi 2008-01-15 403 return 0;
Timur Tabi 2008-01-15 404 }
Timur Tabi 2008-01-15 405
Timur Tabi 2008-01-15 406 return 1;
Timur Tabi 2008-01-15 407 }
Timur Tabi 2008-01-15 408
introduced by commit
serial: ucc_uart: replace ppc-specific IO accessors
xxxxxxxxx>
r>
yperkitty/list/kbuild-all@xxxxxxxxxxxx">https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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