drivers/gpio/gpio-sa1100.c:104:21: sparse: sparse: cast removes address space '__iomem' of expression

From: kernel test robot
Date: Mon Aug 17 2020 - 13:36:12 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces
date: 9 weeks ago
config: arm-randconfig-s031-20200816 (attached as .config)
compiler: arm-linux-gnueabi-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: v0.6.2-180-g49f7e13a-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=arm

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/gpio/gpio-sa1100.c:104:21: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/gpio/gpio-sa1100.c:104:21: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void [noderef] __iomem *membase @@ got void * @@
>> drivers/gpio/gpio-sa1100.c:104:21: sparse: expected void [noderef] __iomem *membase
drivers/gpio/gpio-sa1100.c:104:21: sparse: got void *
>> drivers/gpio/gpio-sa1100.c:115:25: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void *base @@ got void [noderef] __iomem *membase @@
drivers/gpio/gpio-sa1100.c:115:25: sparse: expected void *base
>> drivers/gpio/gpio-sa1100.c:115:25: sparse: got void [noderef] __iomem *membase
>> drivers/gpio/gpio-sa1100.c:121:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@
>> drivers/gpio/gpio-sa1100.c:121:9: sparse: expected void volatile [noderef] __iomem *addr
drivers/gpio/gpio-sa1100.c:121:9: sparse: got void *
drivers/gpio/gpio-sa1100.c:122:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@
drivers/gpio/gpio-sa1100.c:122:9: sparse: expected void volatile [noderef] __iomem *addr
drivers/gpio/gpio-sa1100.c:122:9: sparse: got void *
--
>> drivers/video/fbdev/sa1100fb.c:1041:37: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char [noderef] __iomem *screen_base @@ got unsigned char [usertype] * @@
>> drivers/video/fbdev/sa1100fb.c:1041:37: sparse: expected char [noderef] __iomem *screen_base
drivers/video/fbdev/sa1100fb.c:1041:37: sparse: got unsigned char [usertype] *
drivers/video/fbdev/sa1100fb.c:1219:12: sparse: sparse: symbol 'sa1100fb_init' was not declared. Should it be static?
drivers/video/fbdev/sa1100fb.c:1227:12: sparse: sparse: symbol 'sa1100fb_setup' was not declared. Should it be static?
drivers/video/fbdev/sa1100fb.c:774:17: sparse: sparse: dereference of noderef expression
drivers/video/fbdev/sa1100fb.c:775:17: sparse: sparse: dereference of noderef expression

# 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 +/__iomem +104 drivers/gpio/gpio-sa1100.c

f408c985cefc9b1 drivers/gpio/gpio-sa1100.c Russell King 2011-12-18 91
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 92 static struct sa1100_gpio_chip sa1100_gpio_chip = {
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 93 .chip = {
45528e38173e7d8 arch/arm/mach-sa1100/gpio.c Dmitry Eremin-Solenikov 2008-04-10 94 .label = "gpio",
c65d1fd350fa28d drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 95 .get_direction = sa1100_get_direction,
45528e38173e7d8 arch/arm/mach-sa1100/gpio.c Dmitry Eremin-Solenikov 2008-04-10 96 .direction_input = sa1100_direction_input,
45528e38173e7d8 arch/arm/mach-sa1100/gpio.c Dmitry Eremin-Solenikov 2008-04-10 97 .direction_output = sa1100_direction_output,
45528e38173e7d8 arch/arm/mach-sa1100/gpio.c Dmitry Eremin-Solenikov 2008-04-10 98 .set = sa1100_gpio_set,
45528e38173e7d8 arch/arm/mach-sa1100/gpio.c Dmitry Eremin-Solenikov 2008-04-10 99 .get = sa1100_gpio_get,
f408c985cefc9b1 drivers/gpio/gpio-sa1100.c Russell King 2011-12-18 100 .to_irq = sa1100_to_irq,
45528e38173e7d8 arch/arm/mach-sa1100/gpio.c Dmitry Eremin-Solenikov 2008-04-10 101 .base = 0,
45528e38173e7d8 arch/arm/mach-sa1100/gpio.c Dmitry Eremin-Solenikov 2008-04-10 102 .ngpio = GPIO_MAX + 1,
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 103 },
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 @104 .membase = (void *)&GPLR,
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 105 .irqbase = IRQ_GPIO0,
45528e38173e7d8 arch/arm/mach-sa1100/gpio.c Dmitry Eremin-Solenikov 2008-04-10 106 };
45528e38173e7d8 arch/arm/mach-sa1100/gpio.c Dmitry Eremin-Solenikov 2008-04-10 107
a0ea298d325616b drivers/gpio/gpio-sa1100.c Dmitry Eremin-Solenikov 2015-01-15 108 /*
a0ea298d325616b drivers/gpio/gpio-sa1100.c Dmitry Eremin-Solenikov 2015-01-15 109 * SA1100 GPIO edge detection for IRQs:
a0ea298d325616b drivers/gpio/gpio-sa1100.c Dmitry Eremin-Solenikov 2015-01-15 110 * IRQs are generated on Falling-Edge, Rising-Edge, or both.
a0ea298d325616b drivers/gpio/gpio-sa1100.c Dmitry Eremin-Solenikov 2015-01-15 111 * Use this instead of directly setting GRER/GFER.
a0ea298d325616b drivers/gpio/gpio-sa1100.c Dmitry Eremin-Solenikov 2015-01-15 112 */
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 113 static void sa1100_update_edge_regs(struct sa1100_gpio_chip *sgc)
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 114 {
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 @115 void *base = sgc->membase;
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 116 u32 grer, gfer;
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 117
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 118 grer = sgc->irqrising & sgc->irqmask;
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 119 gfer = sgc->irqfalling & sgc->irqmask;
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 120
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 @121 writel_relaxed(grer, base + R_GRER);
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 122 writel_relaxed(gfer, base + R_GFER);
07242b248119a93 drivers/gpio/gpio-sa1100.c Russell King 2016-08-31 123 }
a0ea298d325616b drivers/gpio/gpio-sa1100.c Dmitry Eremin-Solenikov 2015-01-15 124

:::::: The code at line 104 was first introduced by commit
:::::: 07242b248119a9388a67975aa7fae7c23afc7a07 gpio: sa1100: convert to use IO accessors

:::::: TO: Russell King <rmk+kernel@xxxxxxxxxxxxxxx>
:::::: CC: Linus Walleij <linus.walleij@xxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Attachment: .config.gz
Description: application/gzip

Next message: Sean Christopherson: "Re: [PATCH] selftests: kvm: Use a shorter encoding to clear RAX"
Previous message: Greg Kroah-Hartman: "[PATCH 4.19 163/168] parisc: mask out enable and reserved bits from sba imask"
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