* [PATCH -next] scsi: ufs: ufs-exynos: Fix return value check in exynos_ufs_init()
@ 2020-06-18 13:38 ` Wei Yongjun
2020-06-21 1:38 ` Alim Akhtar
2020-06-24 4:30 ` Martin K. Petersen
0 siblings, 2 replies; 3+ messages in thread
From: Wei Yongjun @ 2020-06-18 13:38 UTC (permalink / raw)
To: Alim Akhtar, Avri Altman, James E.J. Bottomley,
Martin K. Petersen, Kukjin Kim, Krzysztof Kozlowski, Kiwoong Kim,
Seungwon Jeon
Cc: Wei Yongjun, linux-scsi, linux-arm-kernel, linux-samsung-soc,
kernel-janitors, Hulk Robot
In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Fixes: 55f4b1f73631 ("scsi: ufs: ufs-exynos: Add UFS host support for Exynos SoCs")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
drivers/scsi/ufs/ufs-exynos.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c
index 440f2af83d9c..c918fbc6ca60 100644
--- a/drivers/scsi/ufs/ufs-exynos.c
+++ b/drivers/scsi/ufs/ufs-exynos.c
@@ -950,25 +950,25 @@ static int exynos_ufs_init(struct ufs_hba *hba)
/* exynos-specific hci */
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vs_hci");
ufs->reg_hci = devm_ioremap_resource(dev, res);
- if (!ufs->reg_hci) {
+ if (IS_ERR(ufs->reg_hci)) {
dev_err(dev, "cannot ioremap for hci vendor register\n");
- return -ENOMEM;
+ return PTR_ERR(ufs->reg_hci);
}
/* unipro */
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "unipro");
ufs->reg_unipro = devm_ioremap_resource(dev, res);
- if (!ufs->reg_unipro) {
+ if (IS_ERR(ufs->reg_unipro)) {
dev_err(dev, "cannot ioremap for unipro register\n");
- return -ENOMEM;
+ return PTR_ERR(ufs->reg_unipro);
}
/* ufs protector */
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ufsp");
ufs->reg_ufsp = devm_ioremap_resource(dev, res);
- if (!ufs->reg_ufsp) {
+ if (IS_ERR(ufs->reg_ufsp)) {
dev_err(dev, "cannot ioremap for ufs protector register\n");
- return -ENOMEM;
+ return PTR_ERR(ufs->reg_ufsp);
}
ret = exynos_ufs_parse_dt(dev, ufs);
^ permalink raw reply related [flat|nested] 3+ messages in thread
* RE: [PATCH -next] scsi: ufs: ufs-exynos: Fix return value check in exynos_ufs_init()
2020-06-18 13:38 ` [PATCH -next] scsi: ufs: ufs-exynos: Fix return value check in exynos_ufs_init() Wei Yongjun
@ 2020-06-21 1:38 ` Alim Akhtar
2020-06-24 4:30 ` Martin K. Petersen
1 sibling, 0 replies; 3+ messages in thread
From: Alim Akhtar @ 2020-06-21 1:38 UTC (permalink / raw)
To: 'Wei Yongjun', 'Avri Altman',
'James E.J. Bottomley', 'Martin K. Petersen',
'Kukjin Kim', 'Krzysztof Kozlowski',
'Kiwoong Kim', 'Seungwon Jeon'
Cc: linux-scsi, linux-arm-kernel, linux-samsung-soc, kernel-janitors,
'Hulk Robot'
Hi Wei,
> In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and
> never returns NULL. The NULL test in the return value check should be
replaced
> with IS_ERR().
>
> Fixes: 55f4b1f73631 ("scsi: ufs: ufs-exynos: Add UFS host support for
Exynos
> SoCs")
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
> ---
Acked-by: Alim Akhtar <alim.akhtar@samsung.com>
Thanks!
> drivers/scsi/ufs/ufs-exynos.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c
index
> 440f2af83d9c..c918fbc6ca60 100644
> --- a/drivers/scsi/ufs/ufs-exynos.c
> +++ b/drivers/scsi/ufs/ufs-exynos.c
> @@ -950,25 +950,25 @@ static int exynos_ufs_init(struct ufs_hba *hba)
> /* exynos-specific hci */
> res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> "vs_hci");
> ufs->reg_hci = devm_ioremap_resource(dev, res);
> - if (!ufs->reg_hci) {
> + if (IS_ERR(ufs->reg_hci)) {
> dev_err(dev, "cannot ioremap for hci vendor register\n");
> - return -ENOMEM;
> + return PTR_ERR(ufs->reg_hci);
> }
>
> /* unipro */
> res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> "unipro");
> ufs->reg_unipro = devm_ioremap_resource(dev, res);
> - if (!ufs->reg_unipro) {
> + if (IS_ERR(ufs->reg_unipro)) {
> dev_err(dev, "cannot ioremap for unipro register\n");
> - return -ENOMEM;
> + return PTR_ERR(ufs->reg_unipro);
> }
>
> /* ufs protector */
> res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> "ufsp");
> ufs->reg_ufsp = devm_ioremap_resource(dev, res);
> - if (!ufs->reg_ufsp) {
> + if (IS_ERR(ufs->reg_ufsp)) {
> dev_err(dev, "cannot ioremap for ufs protector register\n");
> - return -ENOMEM;
> + return PTR_ERR(ufs->reg_ufsp);
> }
>
> ret = exynos_ufs_parse_dt(dev, ufs);
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH -next] scsi: ufs: ufs-exynos: Fix return value check in exynos_ufs_init()
2020-06-18 13:38 ` [PATCH -next] scsi: ufs: ufs-exynos: Fix return value check in exynos_ufs_init() Wei Yongjun
2020-06-21 1:38 ` Alim Akhtar
@ 2020-06-24 4:30 ` Martin K. Petersen
1 sibling, 0 replies; 3+ messages in thread
From: Martin K. Petersen @ 2020-06-24 4:30 UTC (permalink / raw)
To: Seungwon Jeon, James E.J. Bottomley, Avri Altman, Alim Akhtar,
Krzysztof Kozlowski, Kukjin Kim, Kiwoong Kim, Wei Yongjun
Cc: Martin K . Petersen, linux-samsung-soc, linux-scsi,
linux-arm-kernel, kernel-janitors, Hulk Robot
On Thu, 18 Jun 2020 13:38:37 +0000, Wei Yongjun wrote:
> In case of error, the function devm_ioremap_resource() returns ERR_PTR()
> and never returns NULL. The NULL test in the return value check should
> be replaced with IS_ERR().
Applied to 5.9/scsi-queue, thanks!
[1/1] scsi: ufs: ufs-exynos: Fix return value check in exynos_ufs_init()
https://git.kernel.org/mkp/scsi/c/b2bc2200e89b
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-06-18 13:38 ` [PATCH -next] scsi: ufs: ufs-exynos: Fix return value check in exynos_ufs_init() Wei Yongjun
2020-06-21 1:38 ` Alim Akhtar
2020-06-24 4:30 ` Martin K. Petersen
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