From: Subhash Jadavani <subhashj@codeaurora.org>
To: SF Markus Elfring <elfring@users.sourceforge.net>
Cc: linux-scsi@vger.kernel.org,
"James E. J. Bottomley" <jejb@linux.vnet.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Vinayak Holikatti <vinholikatti@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
kernel-janitors@vger.kernel.org, Wolfram Sang <wsa@the-dreams.de>,
linux-scsi-owner@vger.kernel.org
Subject: Re: [PATCH 2/3] scsi: ufs: Delete an error message for a failed memory allocation in ufshcd_memory_alloc()
Date: Wed, 26 Apr 2017 10:57:31 -0700 [thread overview]
Message-ID: <019b6365c15b0764c156d6453648f7a2@codeaurora.org> (raw)
In-Reply-To: <3d355c13-159a-2570-9ead-af93ad95c210@users.sourceforge.net>
On 2017-04-25 13:28, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Tue, 25 Apr 2017 21:50:43 +0200
>
> The script "checkpatch.pl" pointed information out like the following.
>
> WARNING: Possible unnecessary 'out of memory' message
>
> Thus remove such a statement here.
>
> Link:
> http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
> drivers/scsi/ufs/ufshcd.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index ce385911a20e..5216e33e61a3 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -3274,8 +3274,7 @@ static int ufshcd_memory_alloc(struct ufs_hba
> *hba)
> GFP_KERNEL);
> - if (!hba->lrb) {
> - dev_err(hba->dev, "LRB Memory allocation failed\n");
> + if (!hba->lrb)
> goto out;
> - }
> +
> return 0;
> out:
> return -ENOMEM;
Looks good to me.
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
PS: ufshcd_memory_alloc() also does some DMA coherent memory allocation
(via dmam_alloc_coherent() APIs) and tries to print out the message on
allocation failure. Although i don't know "out of memory" messages will
be printed out by dmam_alloc_coherent() APIs or not. If it does print it
out then we might want to remove our local memory allocation failure log
messages.
--
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
WARNING: multiple messages have this Message-ID (diff)
From: Subhash Jadavani <subhashj@codeaurora.org>
To: SF Markus Elfring <elfring@users.sourceforge.net>
Cc: linux-scsi@vger.kernel.org,
"James E. J. Bottomley" <jejb@linux.vnet.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Vinayak Holikatti <vinholikatti@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
kernel-janitors@vger.kernel.org, Wolfram Sang <wsa@the-dreams.de>,
linux-scsi-owner@vger.kernel.org
Subject: Re: [PATCH 2/3] scsi: ufs: Delete an error message for a failed memory allocation in ufshcd_memory_a
Date: Wed, 26 Apr 2017 17:57:31 +0000 [thread overview]
Message-ID: <019b6365c15b0764c156d6453648f7a2@codeaurora.org> (raw)
In-Reply-To: <3d355c13-159a-2570-9ead-af93ad95c210@users.sourceforge.net>
On 2017-04-25 13:28, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Tue, 25 Apr 2017 21:50:43 +0200
>
> The script "checkpatch.pl" pointed information out like the following.
>
> WARNING: Possible unnecessary 'out of memory' message
>
> Thus remove such a statement here.
>
> Link:
> http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
> drivers/scsi/ufs/ufshcd.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index ce385911a20e..5216e33e61a3 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -3274,8 +3274,7 @@ static int ufshcd_memory_alloc(struct ufs_hba
> *hba)
> GFP_KERNEL);
> - if (!hba->lrb) {
> - dev_err(hba->dev, "LRB Memory allocation failed\n");
> + if (!hba->lrb)
> goto out;
> - }
> +
> return 0;
> out:
> return -ENOMEM;
Looks good to me.
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
PS: ufshcd_memory_alloc() also does some DMA coherent memory allocation
(via dmam_alloc_coherent() APIs) and tries to print out the message on
allocation failure. Although i don't know "out of memory" messages will
be printed out by dmam_alloc_coherent() APIs or not. If it does print it
out then we might want to remove our local memory allocation failure log
messages.
--
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2017-04-26 17:57 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-25 20:24 [PATCH 0/3] SCSI-UFSHCD: Fine-tuning for two function implementations SF Markus Elfring
2017-04-25 20:24 ` SF Markus Elfring
2017-04-25 20:26 ` [PATCH 1/3] scsi: ufs: Use devm_kcalloc() in ufshcd_memory_alloc() SF Markus Elfring
2017-04-25 20:26 ` SF Markus Elfring
2017-04-26 17:52 ` Subhash Jadavani
2017-04-26 17:52 ` Subhash Jadavani
2017-04-25 20:28 ` [PATCH 2/3] scsi: ufs: Delete an error message for a failed memory allocation " SF Markus Elfring
2017-04-25 20:28 ` [PATCH 2/3] scsi: ufs: Delete an error message for a failed memory allocation in ufshcd_memory_alloc SF Markus Elfring
2017-04-26 17:57 ` Subhash Jadavani [this message]
2017-04-26 17:57 ` [PATCH 2/3] scsi: ufs: Delete an error message for a failed memory allocation in ufshcd_memory_a Subhash Jadavani
2017-04-26 18:11 ` scsi: ufs: Delete an error message for a failed memory allocation in ufshcd_memory_alloc() SF Markus Elfring
2017-04-26 18:11 ` SF Markus Elfring
2017-04-26 18:27 ` [PATCH 2/3] " Joe Perches
2017-04-26 18:27 ` [PATCH 2/3] scsi: ufs: Delete an error message for a failed memory allocation in ufshcd_memory_a Joe Perches
2017-04-26 18:50 ` Checking error messages for failed memory allocations SF Markus Elfring
2017-04-26 18:50 ` SF Markus Elfring
2017-04-26 19:05 ` Joe Perches
2017-04-26 19:05 ` Joe Perches
2017-04-26 19:14 ` SF Markus Elfring
2017-04-26 19:14 ` SF Markus Elfring
2017-08-26 11:17 ` scsi: ufs: Delete an error message for a failed memory allocation in ufshcd_memory_alloc() SF Markus Elfring
2017-08-26 11:17 ` SF Markus Elfring
2017-04-25 20:30 ` [PATCH 3/3] scsi: ufs: Delete an unnecessary return statement in ufshcd_exception_event_handler() SF Markus Elfring
2017-04-25 20:30 ` SF Markus Elfring
2017-04-26 17:59 ` Subhash Jadavani
2017-04-26 17:59 ` [PATCH 3/3] scsi: ufs: Delete an unnecessary return statement in ufshcd_exception_event_handler( Subhash Jadavani
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