* [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()
@ 2017-01-19 9:13 Cédric Le Goater
2017-01-19 17:21 ` Marek Vasut
2017-02-08 23:37 ` Brian Norris
0 siblings, 2 replies; 10+ messages in thread
From: Cédric Le Goater @ 2017-01-19 9:13 UTC (permalink / raw)
To: linux-mtd
Cc: David Woodhouse, Brian Norris, Boris Brezillon, Marek Vasut,
Richard Weinberger, Cyrille Pitchen, Cédric Le Goater
The first argument of ioread32_rep() and ioread8_rep is not
const. Change aspeed_smc_read_from_ahb() prototype to fix compile
warning :
drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb':
drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
ioread32_rep(src, buf, len >> 2);
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
drivers/mtd/spi-nor/aspeed-smc.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/mtd/spi-nor/aspeed-smc.c b/drivers/mtd/spi-nor/aspeed-smc.c
index 6bb4c7d1788c..7c86099450be 100644
--- a/drivers/mtd/spi-nor/aspeed-smc.c
+++ b/drivers/mtd/spi-nor/aspeed-smc.c
@@ -222,8 +222,7 @@ struct aspeed_smc_controller {
* the memory buffer pointer and count via explicit code. The final updates
* to len are optimistically suppressed.
*/
-static int aspeed_smc_read_from_ahb(void *buf, const void __iomem *src,
- size_t len)
+static int aspeed_smc_read_from_ahb(void *buf, void __iomem *src, size_t len)
{
size_t offset = 0;
--
2.7.4
^ permalink raw reply related [flat|nested] 10+ messages in thread* Re: [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()
2017-01-19 9:13 [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb() Cédric Le Goater
@ 2017-01-19 17:21 ` Marek Vasut
2017-01-20 13:11 ` Cyrille Pitchen
2017-02-08 23:37 ` Brian Norris
1 sibling, 1 reply; 10+ messages in thread
From: Marek Vasut @ 2017-01-19 17:21 UTC (permalink / raw)
To: Cédric Le Goater, linux-mtd
Cc: David Woodhouse, Brian Norris, Boris Brezillon,
Richard Weinberger, Cyrille Pitchen
On 01/19/2017 10:13 AM, Cédric Le Goater wrote:
> The first argument of ioread32_rep() and ioread8_rep is not
> const. Change aspeed_smc_read_from_ahb() prototype to fix compile
> warning :
>
> drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb':
> drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
> ioread32_rep(src, buf, len >> 2);
>
> Signed-off-by: Cédric Le Goater <clg@kaod.org>
In this case it's IMO OK:
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
> ---
> drivers/mtd/spi-nor/aspeed-smc.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/mtd/spi-nor/aspeed-smc.c b/drivers/mtd/spi-nor/aspeed-smc.c
> index 6bb4c7d1788c..7c86099450be 100644
> --- a/drivers/mtd/spi-nor/aspeed-smc.c
> +++ b/drivers/mtd/spi-nor/aspeed-smc.c
> @@ -222,8 +222,7 @@ struct aspeed_smc_controller {
> * the memory buffer pointer and count via explicit code. The final updates
> * to len are optimistically suppressed.
> */
> -static int aspeed_smc_read_from_ahb(void *buf, const void __iomem *src,
> - size_t len)
> +static int aspeed_smc_read_from_ahb(void *buf, void __iomem *src, size_t len)
> {
> size_t offset = 0;
>
>
--
Best regards,
Marek Vasut
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()
2017-01-19 17:21 ` Marek Vasut
@ 2017-01-20 13:11 ` Cyrille Pitchen
0 siblings, 0 replies; 10+ messages in thread
From: Cyrille Pitchen @ 2017-01-20 13:11 UTC (permalink / raw)
To: Marek Vasut, Cédric Le Goater, linux-mtd
Cc: David Woodhouse, Brian Norris, Boris Brezillon,
Richard Weinberger
Le 19/01/2017 à 18:21, Marek Vasut a écrit :
> On 01/19/2017 10:13 AM, Cédric Le Goater wrote:
>> The first argument of ioread32_rep() and ioread8_rep is not
>> const. Change aspeed_smc_read_from_ahb() prototype to fix compile
>> warning :
>>
>> drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb':
>> drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
>> ioread32_rep(src, buf, len >> 2);
>>
>> Signed-off-by: Cédric Le Goater <clg@kaod.org>
>
> In this case it's IMO OK:
>
> Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
>
Applied to git://github.com/spi-nor/linux.git
Thanks!
>> ---
>> drivers/mtd/spi-nor/aspeed-smc.c | 3 +--
>> 1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/drivers/mtd/spi-nor/aspeed-smc.c b/drivers/mtd/spi-nor/aspeed-smc.c
>> index 6bb4c7d1788c..7c86099450be 100644
>> --- a/drivers/mtd/spi-nor/aspeed-smc.c
>> +++ b/drivers/mtd/spi-nor/aspeed-smc.c
>> @@ -222,8 +222,7 @@ struct aspeed_smc_controller {
>> * the memory buffer pointer and count via explicit code. The final updates
>> * to len are optimistically suppressed.
>> */
>> -static int aspeed_smc_read_from_ahb(void *buf, const void __iomem *src,
>> - size_t len)
>> +static int aspeed_smc_read_from_ahb(void *buf, void __iomem *src, size_t len)
>> {
>> size_t offset = 0;
>>
>>
>
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()
2017-01-19 9:13 [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb() Cédric Le Goater
2017-01-19 17:21 ` Marek Vasut
@ 2017-02-08 23:37 ` Brian Norris
2017-02-09 9:05 ` Marek Vasut
1 sibling, 1 reply; 10+ messages in thread
From: Brian Norris @ 2017-02-08 23:37 UTC (permalink / raw)
To: Cédric Le Goater
Cc: linux-mtd, David Woodhouse, Boris Brezillon, Marek Vasut,
Richard Weinberger, Cyrille Pitchen
On Thu, Jan 19, 2017 at 10:13:18AM +0100, Cédric Le Goater wrote:
> The first argument of ioread32_rep() and ioread8_rep is not
> const. Change aspeed_smc_read_from_ahb() prototype to fix compile
> warning :
>
> drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb':
> drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
> ioread32_rep(src, buf, len >> 2);
But why isn't that param constant? Seems like that's a bug in the
ioread* APIs. Some of their implementations are const, but some are not.
I see for instance that the implementation in lib/iomap.c is not const,
where there's zero reason it shouldn't be (if we also fix, e.g., its
mmio_insl()).
Brian
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()
2017-02-08 23:37 ` Brian Norris
@ 2017-02-09 9:05 ` Marek Vasut
2017-02-09 9:59 ` Cédric Le Goater
2017-02-10 18:11 ` Brian Norris
0 siblings, 2 replies; 10+ messages in thread
From: Marek Vasut @ 2017-02-09 9:05 UTC (permalink / raw)
To: Brian Norris, Cédric Le Goater
Cc: linux-mtd, David Woodhouse, Boris Brezillon, Richard Weinberger,
Cyrille Pitchen
On 02/09/2017 12:37 AM, Brian Norris wrote:
> On Thu, Jan 19, 2017 at 10:13:18AM +0100, Cédric Le Goater wrote:
>> The first argument of ioread32_rep() and ioread8_rep is not
>> const. Change aspeed_smc_read_from_ahb() prototype to fix compile
>> warning :
>>
>> drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb':
>> drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
>> ioread32_rep(src, buf, len >> 2);
>
> But why isn't that param constant? Seems like that's a bug in the
> ioread* APIs. Some of their implementations are const, but some are not.
>
> I see for instance that the implementation in lib/iomap.c is not const,
> where there's zero reason it shouldn't be (if we also fix, e.g., its
> mmio_insl()).
Maybe it's worth fixing the ioread*_rep then ? Then again, that seems to
be way far off the scope of this patch.
--
Best regards,
Marek Vasut
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()
2017-02-09 9:05 ` Marek Vasut
@ 2017-02-09 9:59 ` Cédric Le Goater
2017-02-09 15:04 ` Marek Vasut
2017-02-10 18:11 ` Brian Norris
1 sibling, 1 reply; 10+ messages in thread
From: Cédric Le Goater @ 2017-02-09 9:59 UTC (permalink / raw)
To: Marek Vasut, Brian Norris
Cc: linux-mtd, David Woodhouse, Boris Brezillon, Richard Weinberger,
Cyrille Pitchen
On 02/09/2017 10:05 AM, Marek Vasut wrote:
> On 02/09/2017 12:37 AM, Brian Norris wrote:
>> On Thu, Jan 19, 2017 at 10:13:18AM +0100, Cédric Le Goater wrote:
>>> The first argument of ioread32_rep() and ioread8_rep is not
>>> const. Change aspeed_smc_read_from_ahb() prototype to fix compile
>>> warning :
>>>
>>> drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb':
>>> drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
>>> ioread32_rep(src, buf, len >> 2);
>>
>> But why isn't that param constant? Seems like that's a bug in the
>> ioread* APIs. Some of their implementations are const, but some are not.
>>
>> I see for instance that the implementation in lib/iomap.c is not const,
>> where there's zero reason it shouldn't be (if we also fix, e.g., its
>> mmio_insl()).
>
> Maybe it's worth fixing the ioread*_rep then ? Then again, that seems to
> be way far off the scope of this patch.
Looking closer at where this comes from, the compile warning was
reported on x86 which pulls a different file for the definitions
of the ioread routines.
On x86, arch/x86/include/asm/io.h includes <asm-generic/iomap.h>
which contains prototypes of the ioread routines without 'const'.
On ARM, arch/arm/include/asm/io.h includes <asm-generic/io.h>
which contains the 'const' definitions.
So may be, we should just drop that patch and fix iomap.h instead,
but quite a few arches use it :
arch/sh/include/asm/io.h:#include <asm-generic/iomap.h>
arch/mips/include/asm/io.h:#include <asm-generic/iomap.h>
arch/ia64/include/asm/io.h:#include <asm-generic/iomap.h>
arch/cris/include/asm/io.h:#include <asm-generic/iomap.h>
arch/x86/include/asm/io.h:#include <asm-generic/iomap.h>
arch/alpha/include/asm/io.h:#include <asm-generic/iomap.h>
arch/powerpc/include/asm/io.h:#include <asm-generic/iomap.h>
arch/m68k/include/asm/io_mm.h:#include <asm-generic/iomap.h>
arch/m68k/include/asm/io_no.h:#include <asm-generic/iomap.h>
arch/parisc/include/asm/io.h:#include <asm-generic/iomap.h>
include/asm-generic/io.h:#include <asm-generic/iomap.h>
Thanks,
C.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()
2017-02-09 9:59 ` Cédric Le Goater
@ 2017-02-09 15:04 ` Marek Vasut
2017-02-10 5:50 ` Cédric Le Goater
0 siblings, 1 reply; 10+ messages in thread
From: Marek Vasut @ 2017-02-09 15:04 UTC (permalink / raw)
To: Cédric Le Goater, Brian Norris
Cc: linux-mtd, David Woodhouse, Boris Brezillon, Richard Weinberger,
Cyrille Pitchen
On 02/09/2017 10:59 AM, Cédric Le Goater wrote:
> On 02/09/2017 10:05 AM, Marek Vasut wrote:
>> On 02/09/2017 12:37 AM, Brian Norris wrote:
>>> On Thu, Jan 19, 2017 at 10:13:18AM +0100, Cédric Le Goater wrote:
>>>> The first argument of ioread32_rep() and ioread8_rep is not
>>>> const. Change aspeed_smc_read_from_ahb() prototype to fix compile
>>>> warning :
>>>>
>>>> drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb':
>>>> drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
>>>> ioread32_rep(src, buf, len >> 2);
>>>
>>> But why isn't that param constant? Seems like that's a bug in the
>>> ioread* APIs. Some of their implementations are const, but some are not.
>>>
>>> I see for instance that the implementation in lib/iomap.c is not const,
>>> where there's zero reason it shouldn't be (if we also fix, e.g., its
>>> mmio_insl()).
>>
>> Maybe it's worth fixing the ioread*_rep then ? Then again, that seems to
>> be way far off the scope of this patch.
>
> Looking closer at where this comes from, the compile warning was
> reported on x86 which pulls a different file for the definitions
> of the ioread routines.
Well yes, intel is a special snowflake in the io accessor area.
> On x86, arch/x86/include/asm/io.h includes <asm-generic/iomap.h>
> which contains prototypes of the ioread routines without 'const'.
>
> On ARM, arch/arm/include/asm/io.h includes <asm-generic/io.h>
> which contains the 'const' definitions.
Can you check if any of those arches needs it without const ?
> So may be, we should just drop that patch and fix iomap.h instead,
> but quite a few arches use it :
>
> arch/sh/include/asm/io.h:#include <asm-generic/iomap.h>
> arch/mips/include/asm/io.h:#include <asm-generic/iomap.h>
> arch/ia64/include/asm/io.h:#include <asm-generic/iomap.h>
> arch/cris/include/asm/io.h:#include <asm-generic/iomap.h>
> arch/x86/include/asm/io.h:#include <asm-generic/iomap.h>
> arch/alpha/include/asm/io.h:#include <asm-generic/iomap.h>
> arch/powerpc/include/asm/io.h:#include <asm-generic/iomap.h>
> arch/m68k/include/asm/io_mm.h:#include <asm-generic/iomap.h>
> arch/m68k/include/asm/io_no.h:#include <asm-generic/iomap.h>
> arch/parisc/include/asm/io.h:#include <asm-generic/iomap.h>
> include/asm-generic/io.h:#include <asm-generic/iomap.h>
>
> Thanks,
>
> C.
>
--
Best regards,
Marek Vasut
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()
2017-02-09 15:04 ` Marek Vasut
@ 2017-02-10 5:50 ` Cédric Le Goater
2017-02-10 15:09 ` Marek Vasut
0 siblings, 1 reply; 10+ messages in thread
From: Cédric Le Goater @ 2017-02-10 5:50 UTC (permalink / raw)
To: Marek Vasut, Brian Norris
Cc: linux-mtd, David Woodhouse, Boris Brezillon, Richard Weinberger,
Cyrille Pitchen
On 02/09/2017 04:04 PM, Marek Vasut wrote:
> On 02/09/2017 10:59 AM, Cédric Le Goater wrote:
>> On 02/09/2017 10:05 AM, Marek Vasut wrote:
>>> On 02/09/2017 12:37 AM, Brian Norris wrote:
>>>> On Thu, Jan 19, 2017 at 10:13:18AM +0100, Cédric Le Goater wrote:
>>>>> The first argument of ioread32_rep() and ioread8_rep is not
>>>>> const. Change aspeed_smc_read_from_ahb() prototype to fix compile
>>>>> warning :
>>>>>
>>>>> drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb':
>>>>> drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
>>>>> ioread32_rep(src, buf, len >> 2);
>>>>
>>>> But why isn't that param constant? Seems like that's a bug in the
>>>> ioread* APIs. Some of their implementations are const, but some are not.
>>>>
>>>> I see for instance that the implementation in lib/iomap.c is not const,
>>>> where there's zero reason it shouldn't be (if we also fix, e.g., its
>>>> mmio_insl()).
>>>
>>> Maybe it's worth fixing the ioread*_rep then ? Then again, that seems to
>>> be way far off the scope of this patch.
>>
>> Looking closer at where this comes from, the compile warning was
>> reported on x86 which pulls a different file for the definitions
>> of the ioread routines.
>
> Well yes, intel is a special snowflake in the io accessor area.
>
>> On x86, arch/x86/include/asm/io.h includes <asm-generic/iomap.h>
>> which contains prototypes of the ioread routines without 'const'.
>>
>> On ARM, arch/arm/include/asm/io.h includes <asm-generic/io.h>
>> which contains the 'const' definitions.
>
> Can you check if any of those arches needs it without const ?
ok. I have checked over ppc, all defconfigs compile fine.
I will send a patch to linuxppc to see how we can merged it
in powerpc-next. The other arches would then be checked
by the Intel 0-day bot.
C.
>
>> So may be, we should just drop that patch and fix iomap.h instead,
>> but quite a few arches use it :
>>
>> arch/sh/include/asm/io.h:#include <asm-generic/iomap.h>
>> arch/mips/include/asm/io.h:#include <asm-generic/iomap.h>
>> arch/ia64/include/asm/io.h:#include <asm-generic/iomap.h>
>> arch/cris/include/asm/io.h:#include <asm-generic/iomap.h>
>> arch/x86/include/asm/io.h:#include <asm-generic/iomap.h>
>> arch/alpha/include/asm/io.h:#include <asm-generic/iomap.h>
>> arch/powerpc/include/asm/io.h:#include <asm-generic/iomap.h>
>> arch/m68k/include/asm/io_mm.h:#include <asm-generic/iomap.h>
>> arch/m68k/include/asm/io_no.h:#include <asm-generic/iomap.h>
>> arch/parisc/include/asm/io.h:#include <asm-generic/iomap.h>
>> include/asm-generic/io.h:#include <asm-generic/iomap.h>
>>
>> Thanks,
>>
>> C.
>>
>
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()
2017-02-10 5:50 ` Cédric Le Goater
@ 2017-02-10 15:09 ` Marek Vasut
0 siblings, 0 replies; 10+ messages in thread
From: Marek Vasut @ 2017-02-10 15:09 UTC (permalink / raw)
To: Cédric Le Goater, Brian Norris
Cc: linux-mtd, David Woodhouse, Boris Brezillon, Richard Weinberger,
Cyrille Pitchen
On 02/10/2017 06:50 AM, Cédric Le Goater wrote:
> On 02/09/2017 04:04 PM, Marek Vasut wrote:
>> On 02/09/2017 10:59 AM, Cédric Le Goater wrote:
>>> On 02/09/2017 10:05 AM, Marek Vasut wrote:
>>>> On 02/09/2017 12:37 AM, Brian Norris wrote:
>>>>> On Thu, Jan 19, 2017 at 10:13:18AM +0100, Cédric Le Goater wrote:
>>>>>> The first argument of ioread32_rep() and ioread8_rep is not
>>>>>> const. Change aspeed_smc_read_from_ahb() prototype to fix compile
>>>>>> warning :
>>>>>>
>>>>>> drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb':
>>>>>> drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
>>>>>> ioread32_rep(src, buf, len >> 2);
>>>>>
>>>>> But why isn't that param constant? Seems like that's a bug in the
>>>>> ioread* APIs. Some of their implementations are const, but some are not.
>>>>>
>>>>> I see for instance that the implementation in lib/iomap.c is not const,
>>>>> where there's zero reason it shouldn't be (if we also fix, e.g., its
>>>>> mmio_insl()).
>>>>
>>>> Maybe it's worth fixing the ioread*_rep then ? Then again, that seems to
>>>> be way far off the scope of this patch.
>>>
>>> Looking closer at where this comes from, the compile warning was
>>> reported on x86 which pulls a different file for the definitions
>>> of the ioread routines.
>>
>> Well yes, intel is a special snowflake in the io accessor area.
>>
>>> On x86, arch/x86/include/asm/io.h includes <asm-generic/iomap.h>
>>> which contains prototypes of the ioread routines without 'const'.
>>>
>>> On ARM, arch/arm/include/asm/io.h includes <asm-generic/io.h>
>>> which contains the 'const' definitions.
>>
>> Can you check if any of those arches needs it without const ?
>
> ok. I have checked over ppc, all defconfigs compile fine.
> I will send a patch to linuxppc to see how we can merged it
> in powerpc-next. The other arches would then be checked
> by the Intel 0-day bot.
Great :)
--
Best regards,
Marek Vasut
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()
2017-02-09 9:05 ` Marek Vasut
2017-02-09 9:59 ` Cédric Le Goater
@ 2017-02-10 18:11 ` Brian Norris
1 sibling, 0 replies; 10+ messages in thread
From: Brian Norris @ 2017-02-10 18:11 UTC (permalink / raw)
To: Marek Vasut
Cc: Cédric Le Goater, linux-mtd, David Woodhouse,
Boris Brezillon, Richard Weinberger, Cyrille Pitchen
On Thu, Feb 09, 2017 at 10:05:39AM +0100, Marek Vasut wrote:
> On 02/09/2017 12:37 AM, Brian Norris wrote:
> > On Thu, Jan 19, 2017 at 10:13:18AM +0100, Cédric Le Goater wrote:
> >> The first argument of ioread32_rep() and ioread8_rep is not
> >> const. Change aspeed_smc_read_from_ahb() prototype to fix compile
> >> warning :
> >>
> >> drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb':
> >> drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
> >> ioread32_rep(src, buf, len >> 2);
> >
> > But why isn't that param constant? Seems like that's a bug in the
> > ioread* APIs. Some of their implementations are const, but some are not.
> >
> > I see for instance that the implementation in lib/iomap.c is not const,
> > where there's zero reason it shouldn't be (if we also fix, e.g., its
> > mmio_insl()).
>
> Maybe it's worth fixing the ioread*_rep then ? Then again, that seems to
> be way far off the scope of this patch.
To be clear: I agree, it's out of the scope of this patch. I've pulled
this in anyway. But I am happy for any work in the meantime to improve
the consistency here.
Thanks,
Brian
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2017-02-10 18:11 UTC | newest]
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2017-01-19 9:13 [PATCH] mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb() Cédric Le Goater
2017-01-19 17:21 ` Marek Vasut
2017-01-20 13:11 ` Cyrille Pitchen
2017-02-08 23:37 ` Brian Norris
2017-02-09 9:05 ` Marek Vasut
2017-02-09 9:59 ` Cédric Le Goater
2017-02-09 15:04 ` Marek Vasut
2017-02-10 5:50 ` Cédric Le Goater
2017-02-10 15:09 ` Marek Vasut
2017-02-10 18:11 ` Brian Norris
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