On 2021/5/8 0:08, kernel test robot wrote:
Hi "Peng,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on shawnguo/for-next]
[also build test WARNING on robh/for-next v5.12 next-20210507]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Peng-Fan-OSS/mailbox-imx-add-i-MX8ULP-MU-support/20210507-174948
base: https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git for-next
config: powerpc-randconfig-r023-20210507 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a3a8a1a15b524d91b5308db68e9d293b34cd88dd)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
# https://github.com/0day-ci/linux/commit/356d43252930991aad1353a96361380a7f17f98c
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Peng-Fan-OSS/mailbox-imx-add-i-MX8ULP-MU-support/20210507-174948
git checkout 356d43252930991aad1353a96361380a7f17f98c
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All warnings (new ones prefixed by >>):
__do_insb
^
arch/powerpc/include/asm/io.h:556:56: note: expanded from macro '__do_insb'
#define __do_insb(p, b, n) readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from drivers/mailbox/imx-mailbox.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al;
This should be common powerpc issue?
Regards,
Peng.
\
^~~~~~~~~~~~~~
<scratch space>:186:1: note: expanded from here
__do_insw
^
arch/powerpc/include/asm/io.h:557:56: note: expanded from macro '__do_insw'
#define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from drivers/mailbox/imx-mailbox.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:188:1: note: expanded from here
__do_insl
^
arch/powerpc/include/asm/io.h:558:56: note: expanded from macro '__do_insl'
#define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from drivers/mailbox/imx-mailbox.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:190:1: note: expanded from here
__do_outsb
^
arch/powerpc/include/asm/io.h:559:58: note: expanded from macro '__do_outsb'
#define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from drivers/mailbox/imx-mailbox.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:192:1: note: expanded from here
__do_outsw
^
arch/powerpc/include/asm/io.h:560:58: note: expanded from macro '__do_outsw'
#define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from drivers/mailbox/imx-mailbox.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:194:1: note: expanded from here
__do_outsl
^
arch/powerpc/include/asm/io.h:561:58: note: expanded from macro '__do_outsl'
#define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
drivers/mailbox/imx-mailbox.c:278:2: warning: variable 'val' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized]
default:
^~~~~~~
drivers/mailbox/imx-mailbox.c:282:7: note: uninitialized use occurs here
if (!val)
^~~
drivers/mailbox/imx-mailbox.c:257:9: note: initialize the variable 'val' to silence this warning
u32 val, ctrl;
^
= 0
drivers/mailbox/imx-mailbox.c:608:2: error: member reference base type 'int' is not a structure or union
.xRR = 0x10
^~~~
drivers/mailbox/imx-mailbox.c:609:2: error: member reference base type 'int' is not a structure or union
.xSR = {0x20, 0x20, 0x20, 0x20},
^~~~
drivers/mailbox/imx-mailbox.c:609:9: error: expected expression
.xSR = {0x20, 0x20, 0x20, 0x20},
^
13 warnings and 3 errors generated.
vim +/val +278 drivers/mailbox/imx-mailbox.c
2bb7005696e224 Oleksij Rempel 2018-08-03 251
2bb7005696e224 Oleksij Rempel 2018-08-03 252 static irqreturn_t imx_mu_isr(int irq, void *p)
2bb7005696e224 Oleksij Rempel 2018-08-03 253 {
2bb7005696e224 Oleksij Rempel 2018-08-03 254 struct mbox_chan *chan = p;
2bb7005696e224 Oleksij Rempel 2018-08-03 255 struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox);
2bb7005696e224 Oleksij Rempel 2018-08-03 256 struct imx_mu_con_priv *cp = chan->con_priv;
63b383575c388f Peng Fan 2020-03-19 257 u32 val, ctrl;
2bb7005696e224 Oleksij Rempel 2018-08-03 258
2bb7005696e224 Oleksij Rempel 2018-08-03 259 switch (cp->type) {
2bb7005696e224 Oleksij Rempel 2018-08-03 260 case IMX_MU_TYPE_TX:
356d4325293099 Peng Fan 2021-05-07 261 ctrl = imx_mu_read(priv, priv->dcfg->xCR[IMX_MU_TCR]);
356d4325293099 Peng Fan 2021-05-07 262 val = imx_mu_read(priv, priv->dcfg->xSR[IMX_MU_TSR]);
2bb7005696e224 Oleksij Rempel 2018-08-03 263 val &= IMX_MU_xSR_TEn(cp->idx) &
2bb7005696e224 Oleksij Rempel 2018-08-03 264 (ctrl & IMX_MU_xCR_TIEn(cp->idx));
2bb7005696e224 Oleksij Rempel 2018-08-03 265 break;
2bb7005696e224 Oleksij Rempel 2018-08-03 266 case IMX_MU_TYPE_RX:
356d4325293099 Peng Fan 2021-05-07 267 ctrl = imx_mu_read(priv, priv->dcfg->xCR[IMX_MU_RCR]);
356d4325293099 Peng Fan 2021-05-07 268 val = imx_mu_read(priv, priv->dcfg->xSR[IMX_MU_RSR]);
2bb7005696e224 Oleksij Rempel 2018-08-03 269 val &= IMX_MU_xSR_RFn(cp->idx) &
2bb7005696e224 Oleksij Rempel 2018-08-03 270 (ctrl & IMX_MU_xCR_RIEn(cp->idx));
2bb7005696e224 Oleksij Rempel 2018-08-03 271 break;
2bb7005696e224 Oleksij Rempel 2018-08-03 272 case IMX_MU_TYPE_RXDB:
356d4325293099 Peng Fan 2021-05-07 273 ctrl = imx_mu_read(priv, priv->dcfg->xCR[IMX_MU_GCR]);
356d4325293099 Peng Fan 2021-05-07 274 val = imx_mu_read(priv, priv->dcfg->xSR[IMX_MU_GSR]);
2bb7005696e224 Oleksij Rempel 2018-08-03 275 val &= IMX_MU_xSR_GIPn(cp->idx) &
2bb7005696e224 Oleksij Rempel 2018-08-03 276 (ctrl & IMX_MU_xCR_GIEn(cp->idx));
2bb7005696e224 Oleksij Rempel 2018-08-03 277 break;
2bb7005696e224 Oleksij Rempel 2018-08-03 @278 default:
2bb7005696e224 Oleksij Rempel 2018-08-03 279 break;
2bb7005696e224 Oleksij Rempel 2018-08-03 280 }
2bb7005696e224 Oleksij Rempel 2018-08-03 281
2bb7005696e224 Oleksij Rempel 2018-08-03 282 if (!val)
2bb7005696e224 Oleksij Rempel 2018-08-03 283 return IRQ_NONE;
2bb7005696e224 Oleksij Rempel 2018-08-03 284
2bb7005696e224 Oleksij Rempel 2018-08-03 285 if (val == IMX_MU_xSR_TEn(cp->idx)) {
356d4325293099 Peng Fan 2021-05-07 286 imx_mu_xcr_rmw(priv, IMX_MU_TCR, 0, IMX_MU_xCR_TIEn(cp->idx));
2bb7005696e224 Oleksij Rempel 2018-08-03 287 mbox_chan_txdone(chan, 0);
2bb7005696e224 Oleksij Rempel 2018-08-03 288 } else if (val == IMX_MU_xSR_RFn(cp->idx)) {
63b383575c388f Peng Fan 2020-03-19 289 priv->dcfg->rx(priv, cp);
2bb7005696e224 Oleksij Rempel 2018-08-03 290 } else if (val == IMX_MU_xSR_GIPn(cp->idx)) {
356d4325293099 Peng Fan 2021-05-07 291 imx_mu_write(priv, IMX_MU_xSR_GIPn(cp->idx), priv->dcfg->xSR[IMX_MU_GSR]);
2bb7005696e224 Oleksij Rempel 2018-08-03 292 mbox_chan_received_data(chan, NULL);
2bb7005696e224 Oleksij Rempel 2018-08-03 293 } else {
2bb7005696e224 Oleksij Rempel 2018-08-03 294 dev_warn_ratelimited(priv->dev, "Not handled interrupt\n");
2bb7005696e224 Oleksij Rempel 2018-08-03 295 return IRQ_NONE;
2bb7005696e224 Oleksij Rempel 2018-08-03 296 }
2bb7005696e224 Oleksij Rempel 2018-08-03 297
2bb7005696e224 Oleksij Rempel 2018-08-03 298 return IRQ_HANDLED;
2bb7005696e224 Oleksij Rempel 2018-08-03 299 }
2bb7005696e224 Oleksij Rempel 2018-08-03 300
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