* [U-Boot] [PATCH V2] cmd_mmc.c: check mmc_init() during mmc dev
@ 2014-05-20 16:57 Stephen Warren
2014-05-21 5:40 ` Jaehoon Chung
2014-05-23 18:59 ` Stephen Warren
0 siblings, 2 replies; 7+ messages in thread
From: Stephen Warren @ 2014-05-20 16:57 UTC (permalink / raw)
To: u-boot
From: Bryan Wu <cooloney@gmail.com>
mmc dev ${devnum} will return 0 as success even if there is no card
inserted. Booting script like tegra-common-post.h will call mmc dev
${devnum} to check the mmc device status, it always return 0 even if
mmc_init() fails.
Check mmc_init() return value let mmc dev command return failure
when mmc_init() fails.
Signed-off-by: Bryan Wu <pengw@nvidia.com>
[swarren: Always return 1 on error; hush doesn't appear to support
arbitrary return values. Fixed compilation error due to multiple
declaration of ret variable.]
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
---
v2:
* Always return 1 on error; hush doesn't appear to support
arbitrary return values.
* Fixed compilation error due to multiple declaration of ret variable.
---
common/cmd_mmc.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
index 572aa895fa1c..2e564572f74d 100644
--- a/common/cmd_mmc.c
+++ b/common/cmd_mmc.c
@@ -217,7 +217,10 @@ static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
return 1;
}
- mmc_init(mmc);
+ ret = mmc_init(mmc);
+ if (ret)
+ return 1;
+
if (part != -1) {
ret = mmc_select_hwpart(dev, part);
printf("switch to partitions #%d, %s\n",
--
1.8.1.5
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [U-Boot] [PATCH V2] cmd_mmc.c: check mmc_init() during mmc dev
2014-05-20 16:57 [U-Boot] [PATCH V2] cmd_mmc.c: check mmc_init() during mmc dev Stephen Warren
@ 2014-05-21 5:40 ` Jaehoon Chung
2014-05-21 16:18 ` Stephen Warren
2014-05-23 18:59 ` Stephen Warren
1 sibling, 1 reply; 7+ messages in thread
From: Jaehoon Chung @ 2014-05-21 5:40 UTC (permalink / raw)
To: u-boot
Hi, Stephen.
i didn't apply your patch. Which repository do you use?
Well, if you want to check, can be used "if (mmc_init(mmc))".
And i'm not sure whether this code is really need or not.
Best Regards,
Jaehoon Chung
On 05/21/2014 01:57 AM, Stephen Warren wrote:
> From: Bryan Wu <cooloney@gmail.com>
>
> mmc dev ${devnum} will return 0 as success even if there is no card
> inserted. Booting script like tegra-common-post.h will call mmc dev
> ${devnum} to check the mmc device status, it always return 0 even if
> mmc_init() fails.
>
> Check mmc_init() return value let mmc dev command return failure
> when mmc_init() fails.
>
> Signed-off-by: Bryan Wu <pengw@nvidia.com>
> [swarren: Always return 1 on error; hush doesn't appear to support
> arbitrary return values. Fixed compilation error due to multiple
> declaration of ret variable.]
> Tested-by: Stephen Warren <swarren@nvidia.com>
> Signed-off-by: Stephen Warren <swarren@nvidia.com>
> ---
> v2:
> * Always return 1 on error; hush doesn't appear to support
> arbitrary return values.
> * Fixed compilation error due to multiple declaration of ret variable.
> ---
> common/cmd_mmc.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
> index 572aa895fa1c..2e564572f74d 100644
> --- a/common/cmd_mmc.c
> +++ b/common/cmd_mmc.c
> @@ -217,7 +217,10 @@ static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
> return 1;
> }
>
> - mmc_init(mmc);
> + ret = mmc_init(mmc);
> + if (ret)
> + return 1;
> +
> if (part != -1) {
> ret = mmc_select_hwpart(dev, part);
> printf("switch to partitions #%d, %s\n",
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [U-Boot] [PATCH V2] cmd_mmc.c: check mmc_init() during mmc dev
2014-05-21 5:40 ` Jaehoon Chung
@ 2014-05-21 16:18 ` Stephen Warren
2014-05-22 1:41 ` Jaehoon Chung
0 siblings, 1 reply; 7+ messages in thread
From: Stephen Warren @ 2014-05-21 16:18 UTC (permalink / raw)
To: u-boot
On 05/20/2014 11:40 PM, Jaehoon Chung wrote:
> Hi, Stephen.
>
> i didn't apply your patch. Which repository do you use?
It's based on u-boot.git master branch. The latest u-boot-mmc.git master
branch is already included in that branch, and it looks like some
changes have been applied to cmd_mmc.c in u-boot/master that aren't in
u-boot-mmc/master.
> Well, if you want to check, can be used "if (mmc_init(mmc))".
>
> And i'm not sure whether this code is really need or not.
Why not? This code is required to solve the problem described in the
commit description:
> On 05/21/2014 01:57 AM, Stephen Warren wrote:
>> From: Bryan Wu <cooloney@gmail.com>
>>
>> mmc dev ${devnum} will return 0 as success even if there is no card
>> inserted. Booting script like tegra-common-post.h will call mmc dev
>> ${devnum} to check the mmc device status, it always return 0 even if
>> mmc_init() fails.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [U-Boot] [PATCH V2] cmd_mmc.c: check mmc_init() during mmc dev
2014-05-21 16:18 ` Stephen Warren
@ 2014-05-22 1:41 ` Jaehoon Chung
2014-05-22 16:11 ` Stephen Warren
0 siblings, 1 reply; 7+ messages in thread
From: Jaehoon Chung @ 2014-05-22 1:41 UTC (permalink / raw)
To: u-boot
On 05/22/2014 01:18 AM, Stephen Warren wrote:
> On 05/20/2014 11:40 PM, Jaehoon Chung wrote:
>> Hi, Stephen.
>>
>> i didn't apply your patch. Which repository do you use?
>
> It's based on u-boot.git master branch. The latest u-boot-mmc.git master
> branch is already included in that branch, and it looks like some
> changes have been applied to cmd_mmc.c in u-boot/master that aren't in
> u-boot-mmc/master.
I have pulled the latest u-boot.git, but it didn't apply this patch.
If i missed something, let me know plz.
>
>> Well, if you want to check, can be used "if (mmc_init(mmc))".
>>
>> And i'm not sure whether this code is really need or not.
>
> Why not? This code is required to solve the problem described in the
> commit description:
I will try to reproduce the problem described in the commit-msg.
Because, i didn't reproduce it, so i'm not sure.
But to control the return value, it's reasonable, right?
Best Regards,
Jaehoon Chung
>
>> On 05/21/2014 01:57 AM, Stephen Warren wrote:
>>> From: Bryan Wu <cooloney@gmail.com>
>>>
>>> mmc dev ${devnum} will return 0 as success even if there is no card
>>> inserted. Booting script like tegra-common-post.h will call mmc dev
>>> ${devnum} to check the mmc device status, it always return 0 even if
>>> mmc_init() fails.
>
>
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [U-Boot] [PATCH V2] cmd_mmc.c: check mmc_init() during mmc dev
2014-05-22 1:41 ` Jaehoon Chung
@ 2014-05-22 16:11 ` Stephen Warren
0 siblings, 0 replies; 7+ messages in thread
From: Stephen Warren @ 2014-05-22 16:11 UTC (permalink / raw)
To: u-boot
On 05/21/2014 07:41 PM, Jaehoon Chung wrote:
> On 05/22/2014 01:18 AM, Stephen Warren wrote:
>> On 05/20/2014 11:40 PM, Jaehoon Chung wrote:
>>> Hi, Stephen.
>>>
>>> i didn't apply your patch. Which repository do you use?
>>
>> It's based on u-boot.git master branch. The latest u-boot-mmc.git master
>> branch is already included in that branch, and it looks like some
>> changes have been applied to cmd_mmc.c in u-boot/master that aren't in
>> u-boot-mmc/master.
>
> I have pulled the latest u-boot.git, but it didn't apply this patch.
> If i missed something, let me know plz.
Ah, I guess I hadn't noticed there's an interaction (context changes)
with some other MMC-related patches that I sent:
http://patchwork.ozlabs.org/patch/346771/
[U-Boot,1/4] cmd_part: fix type in part command help text
http://patchwork.ozlabs.org/patch/346770/
[U-Boot,2/4] disk: support devices with HW partitions
http://patchwork.ozlabs.org/patch/346768/
[U-Boot,3/4] mmc: provide a select_hwpart implementation for get_device()
http://patchwork.ozlabs.org/patch/346769/
[U-Boot,4/4] cmd_mmc: use new mmc_select_hwpart() function
So, you can either apply those first, or use "git am -3" rather than
"git am", plus declare "int ret"; patch 4/4 above does that.
>>> Well, if you want to check, can be used "if (mmc_init(mmc))".
>>>
>>> And i'm not sure whether this code is really need or not.
>>
>> Why not? This code is required to solve the problem described in the
>> commit description:
>
> I will try to reproduce the problem described in the commit-msg.
> Because, i didn't reproduce it, so i'm not sure.
> But to control the return value, it's reasonable, right?
Yes, I think so.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [U-Boot] [PATCH V2] cmd_mmc.c: check mmc_init() during mmc dev
2014-05-20 16:57 [U-Boot] [PATCH V2] cmd_mmc.c: check mmc_init() during mmc dev Stephen Warren
2014-05-21 5:40 ` Jaehoon Chung
@ 2014-05-23 18:59 ` Stephen Warren
2014-06-12 11:13 ` Pantelis Antoniou
1 sibling, 1 reply; 7+ messages in thread
From: Stephen Warren @ 2014-05-23 18:59 UTC (permalink / raw)
To: u-boot
On 05/20/2014 10:57 AM, Stephen Warren wrote:
> From: Bryan Wu <cooloney@gmail.com>
>
> mmc dev ${devnum} will return 0 as success even if there is no card
> inserted. Booting script like tegra-common-post.h will call mmc dev
> ${devnum} to check the mmc device status, it always return 0 even if
> mmc_init() fails.
>
> Check mmc_init() return value let mmc dev command return failure
> when mmc_init() fails.
For the email archive record, it looks like this same logic has already
been implemented as part of:
1fd93c6e7d8a eMMC: cmd_mmc.c adds the 'rpmb' sub-command for the 'mmc'
command
... which was just recently committed into u-boot-mmc/master.
(See the code in init_mmc_device)
^ permalink raw reply [flat|nested] 7+ messages in thread
* [U-Boot] [PATCH V2] cmd_mmc.c: check mmc_init() during mmc dev
2014-05-23 18:59 ` Stephen Warren
@ 2014-06-12 11:13 ` Pantelis Antoniou
0 siblings, 0 replies; 7+ messages in thread
From: Pantelis Antoniou @ 2014-06-12 11:13 UTC (permalink / raw)
To: u-boot
Hi Stephen,
On May 23, 2014, at 9:59 PM, Stephen Warren wrote:
> On 05/20/2014 10:57 AM, Stephen Warren wrote:
>> From: Bryan Wu <cooloney@gmail.com>
>>
>> mmc dev ${devnum} will return 0 as success even if there is no card
>> inserted. Booting script like tegra-common-post.h will call mmc dev
>> ${devnum} to check the mmc device status, it always return 0 even if
>> mmc_init() fails.
>>
>> Check mmc_init() return value let mmc dev command return failure
>> when mmc_init() fails.
>
> For the email archive record, it looks like this same logic has already
> been implemented as part of:
>
> 1fd93c6e7d8a eMMC: cmd_mmc.c adds the 'rpmb' sub-command for the 'mmc'
> command
>
> ... which was just recently committed into u-boot-mmc/master.
>
> (See the code in init_mmc_device)
Similar functionality is in master already. Dropping the patch.
-- Pantelis
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2014-06-12 11:13 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2014-05-20 16:57 [U-Boot] [PATCH V2] cmd_mmc.c: check mmc_init() during mmc dev Stephen Warren
2014-05-21 5:40 ` Jaehoon Chung
2014-05-21 16:18 ` Stephen Warren
2014-05-22 1:41 ` Jaehoon Chung
2014-05-22 16:11 ` Stephen Warren
2014-05-23 18:59 ` Stephen Warren
2014-06-12 11:13 ` Pantelis Antoniou
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