Re: [V2] drm: msm: adreno: use IS_ERR() instead of null pointer check

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 07/11/2020 06:19, Wang Qing wrote:
a6xx_gmu_get_mmio() never return null in case of error, but ERR_PTR(), so
we should use IS_ERR() instead of null pointer check and IS_ERR_OR_NULL().

Signed-off-by: Wang Qing <wangqing@xxxxxxxx>

As a second thought, ioremap's NULL is converted to ERR_PTR(-EINVAL), so the patch is correct.

---
  drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 +++---
  1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 491fee4..82420f7
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -492,7 +492,7 @@ static void a6xx_gmu_rpmh_init(struct a6xx_gmu *gmu)
  	void __iomem *seqptr = a6xx_gmu_get_mmio(pdev, "gmu_pdc_seq");
  	uint32_t pdc_address_offset;
- if (!pdcptr || !seqptr)
+	if (IS_ERR(pdcptr) || IS_ERR(seqptr))
  		goto err;
if (adreno_is_a618(adreno_gpu) || adreno_is_a640(adreno_gpu))
@@ -580,9 +580,9 @@ static void a6xx_gmu_rpmh_init(struct a6xx_gmu *gmu)
  	wmb();
err:
-	if (!IS_ERR_OR_NULL(pdcptr))
+	if (!IS_ERR(pdcptr))
  		iounmap(pdcptr);
-	if (!IS_ERR_OR_NULL(seqptr))
+	if (!IS_ERR(seqptr))
  		iounmap(seqptr);
  }


--
With best wishes
Dmitry



[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [Linux for Sparc]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux