drivers/ata/ahci_xgene.c:196:41: sparse: sparse: incorrect type in initializer (different address spaces)

From: kernel test robot
Date: Mon Aug 24 2020 - 11:58:07 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d012a7190fc1fd72ed48911e77ca97ba4521bccd
commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces
date: 10 weeks ago
config: powerpc64-randconfig-s031-20200824 (attached as .config)
compiler: powerpc-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.2-191-g10164920-dirty
git checkout 670d0a4b10704667765f7d18f7592993d02783aa
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=powerpc64

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

sparse warnings: (new ones prefixed by >>)

>> drivers/ata/ahci_xgene.c:196:41: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void *port_mmio @@ got void [noderef] __iomem * @@
drivers/ata/ahci_xgene.c:196:41: sparse: expected void *port_mmio
>> drivers/ata/ahci_xgene.c:196:41: sparse: got void [noderef] __iomem *
>> drivers/ata/ahci_xgene.c:203:44: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@
>> drivers/ata/ahci_xgene.c:203:44: sparse: expected void const volatile [noderef] __iomem *addr
drivers/ata/ahci_xgene.c:203:44: sparse: got void *
>> drivers/ata/ahci_xgene.c:206:44: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@
>> drivers/ata/ahci_xgene.c:206:44: sparse: expected void volatile [noderef] __iomem *addr
drivers/ata/ahci_xgene.c:206:44: sparse: got void *
drivers/ata/ahci_xgene.c:262:33: sparse: sparse: invalid assignment: &=
drivers/ata/ahci_xgene.c:262:33: sparse: left side has type unsigned short
drivers/ata/ahci_xgene.c:262:33: sparse: right side has type restricted __le16
drivers/ata/ahci_xgene.c:457:41: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void *port_mmio @@ got void [noderef] __iomem * @@
drivers/ata/ahci_xgene.c:457:41: sparse: expected void *port_mmio
drivers/ata/ahci_xgene.c:457:41: sparse: got void [noderef] __iomem *
drivers/ata/ahci_xgene.c:464:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@
drivers/ata/ahci_xgene.c:464:36: sparse: expected void const volatile [noderef] __iomem *addr
drivers/ata/ahci_xgene.c:464:36: sparse: got void *
drivers/ata/ahci_xgene.c:467:36: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@
drivers/ata/ahci_xgene.c:467:36: sparse: expected void volatile [noderef] __iomem *addr
drivers/ata/ahci_xgene.c:467:36: sparse: got void *
drivers/ata/ahci_xgene.c:502:41: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void *port_mmio @@ got void [noderef] __iomem * @@
drivers/ata/ahci_xgene.c:502:41: sparse: expected void *port_mmio
drivers/ata/ahci_xgene.c:502:41: sparse: got void [noderef] __iomem *
drivers/ata/ahci_xgene.c:508:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@
drivers/ata/ahci_xgene.c:508:41: sparse: expected void const volatile [noderef] __iomem *addr
drivers/ata/ahci_xgene.c:508:41: sparse: got void *
drivers/ata/ahci_xgene.c:514:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@
drivers/ata/ahci_xgene.c:514:36: sparse: expected void const volatile [noderef] __iomem *addr
drivers/ata/ahci_xgene.c:514:36: sparse: got void *
drivers/ata/ahci_xgene.c:517:36: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@
drivers/ata/ahci_xgene.c:517:36: sparse: expected void volatile [noderef] __iomem *addr
drivers/ata/ahci_xgene.c:517:36: sparse: got void *
drivers/ata/ahci_xgene.c:530:57: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@
drivers/ata/ahci_xgene.c:530:57: sparse: expected void volatile [noderef] __iomem *addr
drivers/ata/ahci_xgene.c:530:57: sparse: got void *
drivers/ata/ahci_xgene.c:718:9: sparse: sparse: Initializer entry defined twice
drivers/ata/ahci_xgene.c:718:9: sparse: also defined here
--
drivers/usb/host/ehci-hcd.c: note: in included file:
drivers/usb/host/ehci-q.c:1389:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __hc32 [usertype] old_current @@ got int @@
drivers/usb/host/ehci-q.c:1389:27: sparse: expected restricted __hc32 [usertype] old_current
drivers/usb/host/ehci-q.c:1389:27: sparse: got int
drivers/usb/host/ehci-hcd.c: note: in included file:
drivers/usb/host/ehci-mem.c:188:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __hc32 [usertype] *periodic @@ got restricted __le32 [usertype] * @@
drivers/usb/host/ehci-mem.c:188:24: sparse: expected restricted __hc32 [usertype] *periodic
drivers/usb/host/ehci-mem.c:188:24: sparse: got restricted __le32 [usertype] *
drivers/usb/host/ehci-hcd.c:566:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __hc32 [usertype] old_current @@ got int @@
drivers/usb/host/ehci-hcd.c:566:27: sparse: expected restricted __hc32 [usertype] old_current
drivers/usb/host/ehci-hcd.c:566:27: sparse: got int
drivers/usb/host/ehci-hcd.c: note: in included file:
drivers/usb/host/ehci-ppc-of.c:140:47: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected restricted __hc32 [usertype] *ohci_hcctrl_reg @@ got void [noderef] __iomem * @@
drivers/usb/host/ehci-ppc-of.c:140:47: sparse: expected restricted __hc32 [usertype] *ohci_hcctrl_reg
drivers/usb/host/ehci-ppc-of.c:140:47: sparse: got void [noderef] __iomem *
drivers/usb/host/ehci-hcd.c: note: in included file:
>> drivers/usb/host/ehci.h:787:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got restricted __hc32 [usertype] *ohci_hcctrl_reg @@
>> drivers/usb/host/ehci.h:787:36: sparse: expected void const volatile [noderef] __iomem *addr
drivers/usb/host/ehci.h:787:36: sparse: got restricted __hc32 [usertype] *ohci_hcctrl_reg
>> drivers/usb/host/ehci.h:793:35: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got restricted __hc32 [usertype] *ohci_hcctrl_reg @@
>> drivers/usb/host/ehci.h:793:35: sparse: expected void volatile [noderef] __iomem *addr
drivers/usb/host/ehci.h:793:35: sparse: got restricted __hc32 [usertype] *ohci_hcctrl_reg
drivers/usb/host/ehci.h:794:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got restricted __hc32 [usertype] *ohci_hcctrl_reg @@
drivers/usb/host/ehci.h:794:29: sparse: expected void const volatile [noderef] __iomem *addr
drivers/usb/host/ehci.h:794:29: sparse: got restricted __hc32 [usertype] *ohci_hcctrl_reg
>> drivers/usb/host/ehci.h:787:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got restricted __hc32 [usertype] *ohci_hcctrl_reg @@
>> drivers/usb/host/ehci.h:787:36: sparse: expected void const volatile [noderef] __iomem *addr
drivers/usb/host/ehci.h:787:36: sparse: got restricted __hc32 [usertype] *ohci_hcctrl_reg
>> drivers/usb/host/ehci.h:793:35: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got restricted __hc32 [usertype] *ohci_hcctrl_reg @@
>> drivers/usb/host/ehci.h:793:35: sparse: expected void volatile [noderef] __iomem *addr
drivers/usb/host/ehci.h:793:35: sparse: got restricted __hc32 [usertype] *ohci_hcctrl_reg
drivers/usb/host/ehci.h:794:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got restricted __hc32 [usertype] *ohci_hcctrl_reg @@
drivers/usb/host/ehci.h:794:29: sparse: expected void const volatile [noderef] __iomem *addr
drivers/usb/host/ehci.h:794:29: sparse: got restricted __hc32 [usertype] *ohci_hcctrl_reg
>> drivers/usb/host/ehci.h:787:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got restricted __hc32 [usertype] *ohci_hcctrl_reg @@
>> drivers/usb/host/ehci.h:787:36: sparse: expected void const volatile [noderef] __iomem *addr
drivers/usb/host/ehci.h:787:36: sparse: got restricted __hc32 [usertype] *ohci_hcctrl_reg
>> drivers/usb/host/ehci.h:793:35: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got restricted __hc32 [usertype] *ohci_hcctrl_reg @@
>> drivers/usb/host/ehci.h:793:35: sparse: expected void volatile [noderef] __iomem *addr
drivers/usb/host/ehci.h:793:35: sparse: got restricted __hc32 [usertype] *ohci_hcctrl_reg
drivers/usb/host/ehci.h:794:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got restricted __hc32 [usertype] *ohci_hcctrl_reg @@
drivers/usb/host/ehci.h:794:29: sparse: expected void const volatile [noderef] __iomem *addr
drivers/usb/host/ehci.h:794:29: sparse: got restricted __hc32 [usertype] *ohci_hcctrl_reg

# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=670d0a4b10704667765f7d18f7592993d02783aa
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 670d0a4b10704667765f7d18f7592993d02783aa
vim +196 drivers/ata/ahci_xgene.c

2a0bdff6b958d1b Suman Tripathi 2014-07-07 172
2a0bdff6b958d1b Suman Tripathi 2014-07-07 173 /**
2a0bdff6b958d1b Suman Tripathi 2014-07-07 174 * xgene_ahci_qc_issue - Issue commands to the device
2a0bdff6b958d1b Suman Tripathi 2014-07-07 175 * @qc: Command to issue
2a0bdff6b958d1b Suman Tripathi 2014-07-07 176 *
a3a84bc7c885eee Suman Tripathi 2015-01-06 177 * Due to Hardware errata for IDENTIFY DEVICE command, the controller cannot
a3a84bc7c885eee Suman Tripathi 2015-01-06 178 * clear the BSY bit after receiving the PIO setup FIS. This results in the dma
a3a84bc7c885eee Suman Tripathi 2015-01-06 179 * state machine goes into the CMFatalErrorUpdate state and locks up. By
a3a84bc7c885eee Suman Tripathi 2015-01-06 180 * restarting the dma engine, it removes the controller out of lock up state.
a3a84bc7c885eee Suman Tripathi 2015-01-06 181 *
a3a84bc7c885eee Suman Tripathi 2015-01-06 182 * Due to H/W errata, the controller is unable to save the PMP
a3a84bc7c885eee Suman Tripathi 2015-01-06 183 * field fetched from command header before sending the H2D FIS.
a3a84bc7c885eee Suman Tripathi 2015-01-06 184 * When the device returns the PMP port field in the D2H FIS, there is
a3a84bc7c885eee Suman Tripathi 2015-01-06 185 * a mismatch and results in command completion failure. The
a3a84bc7c885eee Suman Tripathi 2015-01-06 186 * workaround is to write the pmp value to PxFBS.DEV field before issuing
a3a84bc7c885eee Suman Tripathi 2015-01-06 187 * any command to PMP.
2a0bdff6b958d1b Suman Tripathi 2014-07-07 188 */
2a0bdff6b958d1b Suman Tripathi 2014-07-07 189 static unsigned int xgene_ahci_qc_issue(struct ata_queued_cmd *qc)
2a0bdff6b958d1b Suman Tripathi 2014-07-07 190 {
2a0bdff6b958d1b Suman Tripathi 2014-07-07 191 struct ata_port *ap = qc->ap;
2a0bdff6b958d1b Suman Tripathi 2014-07-07 192 struct ahci_host_priv *hpriv = ap->host->private_data;
2a0bdff6b958d1b Suman Tripathi 2014-07-07 193 struct xgene_ahci_context *ctx = hpriv->plat_data;
2a0bdff6b958d1b Suman Tripathi 2014-07-07 194 int rc = 0;
a3a84bc7c885eee Suman Tripathi 2015-01-06 195 u32 port_fbs;
a3a84bc7c885eee Suman Tripathi 2015-01-06 @196 void *port_mmio = ahci_port_base(ap);
a3a84bc7c885eee Suman Tripathi 2015-01-06 197
a3a84bc7c885eee Suman Tripathi 2015-01-06 198 /*
a3a84bc7c885eee Suman Tripathi 2015-01-06 199 * Write the pmp value to PxFBS.DEV
a3a84bc7c885eee Suman Tripathi 2015-01-06 200 * for case of Port Mulitplier.
a3a84bc7c885eee Suman Tripathi 2015-01-06 201 */
a3a84bc7c885eee Suman Tripathi 2015-01-06 202 if (ctx->class[ap->port_no] == ATA_DEV_PMP) {
a3a84bc7c885eee Suman Tripathi 2015-01-06 @203 port_fbs = readl(port_mmio + PORT_FBS);
a3a84bc7c885eee Suman Tripathi 2015-01-06 204 port_fbs &= ~PORT_FBS_DEV_MASK;
a3a84bc7c885eee Suman Tripathi 2015-01-06 205 port_fbs |= qc->dev->link->pmp << PORT_FBS_DEV_OFFSET;
a3a84bc7c885eee Suman Tripathi 2015-01-06 @206 writel(port_fbs, port_mmio + PORT_FBS);
a3a84bc7c885eee Suman Tripathi 2015-01-06 207 }
2a0bdff6b958d1b Suman Tripathi 2014-07-07 208
1102407bb714dce Suman Tripathi 2014-12-29 209 if (unlikely((ctx->last_cmd[ap->port_no] == ATA_CMD_ID_ATA) ||
09c32aaa3683cbc Suman Tripathi 2015-02-02 210 (ctx->last_cmd[ap->port_no] == ATA_CMD_PACKET) ||
09c32aaa3683cbc Suman Tripathi 2015-02-02 211 (ctx->last_cmd[ap->port_no] == ATA_CMD_SMART)))
2a0bdff6b958d1b Suman Tripathi 2014-07-07 212 xgene_ahci_restart_engine(ap);
2a0bdff6b958d1b Suman Tripathi 2014-07-07 213
2a0bdff6b958d1b Suman Tripathi 2014-07-07 214 rc = ahci_qc_issue(qc);
2a0bdff6b958d1b Suman Tripathi 2014-07-07 215
2a0bdff6b958d1b Suman Tripathi 2014-07-07 216 /* Save the last command issued */
2a0bdff6b958d1b Suman Tripathi 2014-07-07 217 ctx->last_cmd[ap->port_no] = qc->tf.command;
2a0bdff6b958d1b Suman Tripathi 2014-07-07 218
2a0bdff6b958d1b Suman Tripathi 2014-07-07 219 return rc;
2a0bdff6b958d1b Suman Tripathi 2014-07-07 220 }
2a0bdff6b958d1b Suman Tripathi 2014-07-07 221

:::::: The code at line 196 was first introduced by commit
:::::: a3a84bc7c885eee954f1971c43e36a3587fbf565 ahci_xgene: Implement the workaround to support PMP enumeration and discovery.

:::::: TO: Suman Tripathi <stripathi@xxxxxxx>
:::::: CC: Tejun Heo <tj@xxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
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