diff mbox series

[5.4,147/260] m68knommu: only set CONFIG_ISA_DMA_API for ColdFire sub-arch

Message ID 20210920163936.109686269@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Sept. 20, 2021, 4:42 p.m. UTC 
From: Arnd Bergmann <arnd@arndb.de>


[ Upstream commit db87db65c1059f3be04506d122f8ec9b2fa3b05e ]

> Hi Arnd,

>

> First bad commit (maybe != root cause):

>

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master

> head:   2f73937c9aa561e2082839bc1a8efaac75d6e244

> commit: 47fd22f2b84765a2f7e3f150282497b902624547 [4771/5318] cs89x0: rework driver configuration

> config: m68k-randconfig-c003-20210804 (attached as .config)

> compiler: m68k-linux-gcc (GCC) 10.3.0

> 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

>         # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=47fd22f2b84765a2f7e3f150282497b902624547

>         git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git

>         git fetch --no-tags linux-next master

>         git checkout 47fd22f2b84765a2f7e3f150282497b902624547

>         # save the attached .config to linux build tree

>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=m68k

>

> If you fix the issue, kindly add following tag as appropriate

> Reported-by: kernel test robot <lkp@intel.com>

>

> All errors (new ones prefixed by >>):

>

>    In file included from include/linux/kernel.h:19,

>                     from include/linux/list.h:9,

>                     from include/linux/module.h:12,

>                     from drivers/net/ethernet/cirrus/cs89x0.c:51:

>    drivers/net/ethernet/cirrus/cs89x0.c: In function 'net_open':

>    drivers/net/ethernet/cirrus/cs89x0.c:897:20: error: implicit declaration of function 'isa_virt_to_bus'; did you mean 'virt_to_bus'? [-Werror=implicit-function-declaration]

>      897 |     (unsigned long)isa_virt_to_bus(lp->dma_buff));

>          |                    ^~~~~~~~~~~~~~~

>    include/linux/printk.h:141:17: note: in definition of macro 'no_printk'

>      141 |   printk(fmt, ##__VA_ARGS__);  \

>          |                 ^~~~~~~~~~~

>    drivers/net/ethernet/cirrus/cs89x0.c:86:3: note: in expansion of macro 'pr_debug'

>       86 |   pr_##level(fmt, ##__VA_ARGS__);   \

>          |   ^~~

>    drivers/net/ethernet/cirrus/cs89x0.c:894:3: note: in expansion of macro 'cs89_dbg'

>      894 |   cs89_dbg(1, debug, "%s: dma %lx %lx\n",

>          |   ^~~~~~~~

> >> drivers/net/ethernet/cirrus/cs89x0.c:914:3: error: implicit declaration of function 'disable_dma'; did you mean 'disable_irq'? [-Werror=implicit-function-declaration]


As far as I can tell, this is a bug with the m68kmmu architecture, not
with my driver:
The CONFIG_ISA_DMA_API option is provided for coldfire, which implements it,
but dragonball also sets the option as a side-effect, without actually
implementing
the interfaces. The patch below should fix it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>

Signed-off-by: Sasha Levin <sashal@kernel.org>

---
 arch/m68k/Kconfig.bus | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.30.2
diff mbox series

Patch

diff --git a/arch/m68k/Kconfig.bus b/arch/m68k/Kconfig.bus
index 9d0a3a23d50e..355c51309ed8 100644
--- a/arch/m68k/Kconfig.bus
+++ b/arch/m68k/Kconfig.bus
@@ -63,7 +63,7 @@  source "drivers/zorro/Kconfig"
 
 endif
 
-if !MMU
+if COLDFIRE
 
 config ISA_DMA_API
         def_bool !M5272