Re: [PATCH] soc: fsl: qe: convert QE interrupt controller to platform_device

From: Dan Carpenter
Date: Sat Jul 10 2021 - 10:56:23 EST

Hi Maxim,

url: https://github.com/0day-ci/linux/commits/Maxim-Kochetkov/soc-fsl-qe-convert-QE-interrupt-controller-to-platform_device/20210705-191227
base: https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
config: openrisc-randconfig-m031-20210709 (attached as .config)
compiler: or1k-linux-gcc (GCC) 9.3.0

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

smatch warnings:
drivers/soc/fsl/qe/qe_ic.c:461 qe_ic_init() warn: 'qe_ic->regs' not released on lines: 442.

vim +461 drivers/soc/fsl/qe/qe_ic.c

43f09464f68dbb drivers/soc/fsl/qe/qe_ic.c Maxim Kochetkov 2021-07-05 408 static int qe_ic_init(struct platform_device *pdev)
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 409 {
4e0e161d3cc403 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 410 void (*low_handler)(struct irq_desc *desc);
4e0e161d3cc403 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 411 void (*high_handler)(struct irq_desc *desc);
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 412 struct qe_ic *qe_ic;
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 413 struct resource res;
43f09464f68dbb drivers/soc/fsl/qe/qe_ic.c Maxim Kochetkov 2021-07-05 414 struct device_node *node = pdev->dev.of_node;
882c626d1d4650 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 415 u32 ret;
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 416
2272a55f16c998 arch/powerpc/sysdev/qe_lib/qe_ic.c Michael Ellerman 2008-05-26 417 ret = of_address_to_resource(node, 0, &res);
2272a55f16c998 arch/powerpc/sysdev/qe_lib/qe_ic.c Michael Ellerman 2008-05-26 418 if (ret)
43f09464f68dbb drivers/soc/fsl/qe/qe_ic.c Maxim Kochetkov 2021-07-05 419 return -ENODEV;
2272a55f16c998 arch/powerpc/sysdev/qe_lib/qe_ic.c Michael Ellerman 2008-05-26 420
ea96025a26ab89 arch/powerpc/sysdev/qe_lib/qe_ic.c Anton Vorontsov 2009-07-01 421 qe_ic = kzalloc(sizeof(*qe_ic), GFP_KERNEL);
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 422 if (qe_ic == NULL)
43f09464f68dbb drivers/soc/fsl/qe/qe_ic.c Maxim Kochetkov 2021-07-05 423 return -ENOMEM;
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 424
a8db8cf0d894df arch/powerpc/sysdev/qe_lib/qe_ic.c Grant Likely 2012-02-14 425 qe_ic->irqhost = irq_domain_add_linear(node, NR_QE_IC_INTS,
a8db8cf0d894df arch/powerpc/sysdev/qe_lib/qe_ic.c Grant Likely 2012-02-14 426 &qe_ic_host_ops, qe_ic);
3475dd8a68a7c7 arch/powerpc/sysdev/qe_lib/qe_ic.c Julia Lawall 2009-08-01 427 if (qe_ic->irqhost == NULL) {
^^^^^^^^^^^^^^
Does this need to be cleaned up?

3475dd8a68a7c7 arch/powerpc/sysdev/qe_lib/qe_ic.c Julia Lawall 2009-08-01 428 kfree(qe_ic);
43f09464f68dbb drivers/soc/fsl/qe/qe_ic.c Maxim Kochetkov 2021-07-05 429 return -ENODEV;
3475dd8a68a7c7 arch/powerpc/sysdev/qe_lib/qe_ic.c Julia Lawall 2009-08-01 430 }
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 431
28f65c11f2ffb3 arch/powerpc/sysdev/qe_lib/qe_ic.c Joe Perches 2011-06-09 432 qe_ic->regs = ioremap(res.start, resource_size(&res));
^^^^^^^^^^^^^^^^^^^^^

9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 433
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 434 qe_ic->hc_irq = qe_ic_irq_chip;
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 435
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 436 qe_ic->virq_high = irq_of_parse_and_map(node, 0);
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 437 qe_ic->virq_low = irq_of_parse_and_map(node, 1);
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 438
10d7930dbb51a8 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 439 if (!qe_ic->virq_low) {
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 440 printk(KERN_ERR "Failed to map QE_IC low IRQ\n");
3475dd8a68a7c7 arch/powerpc/sysdev/qe_lib/qe_ic.c Julia Lawall 2009-08-01 441 kfree(qe_ic);
43f09464f68dbb drivers/soc/fsl/qe/qe_ic.c Maxim Kochetkov 2021-07-05 442 return -ENODEV;

Call iounmap() before returning?

9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 443 }
4e0e161d3cc403 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 444 if (qe_ic->virq_high != qe_ic->virq_low) {
523eef1d206a67 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 445 low_handler = qe_ic_cascade_low;
523eef1d206a67 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 446 high_handler = qe_ic_cascade_high;
4e0e161d3cc403 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 447 } else {
4e0e161d3cc403 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 448 low_handler = qe_ic_cascade_muxed_mpic;
4e0e161d3cc403 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 449 high_handler = NULL;
4e0e161d3cc403 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 450 }
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 451
882c626d1d4650 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 452 qe_ic_write(qe_ic->regs, QEIC_CICR, 0);
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 453
ec775d0e70eb6b arch/powerpc/sysdev/qe_lib/qe_ic.c Thomas Gleixner 2011-03-25 454 irq_set_handler_data(qe_ic->virq_low, qe_ic);
ec775d0e70eb6b arch/powerpc/sysdev/qe_lib/qe_ic.c Thomas Gleixner 2011-03-25 455 irq_set_chained_handler(qe_ic->virq_low, low_handler);
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 456
10d7930dbb51a8 drivers/soc/fsl/qe/qe_ic.c Rasmus Villemoes 2019-11-28 457 if (qe_ic->virq_high && qe_ic->virq_high != qe_ic->virq_low) {
ec775d0e70eb6b arch/powerpc/sysdev/qe_lib/qe_ic.c Thomas Gleixner 2011-03-25 458 irq_set_handler_data(qe_ic->virq_high, qe_ic);
ec775d0e70eb6b arch/powerpc/sysdev/qe_lib/qe_ic.c Thomas Gleixner 2011-03-25 459 irq_set_chained_handler(qe_ic->virq_high, high_handler);
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 460 }
43f09464f68dbb drivers/soc/fsl/qe/qe_ic.c Maxim Kochetkov 2021-07-05 @461 return 0;
9865853851313e arch/powerpc/sysdev/qe_lib/qe_ic.c Li Yang 2006-10-03 462 }

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