Dealing with PM runtime (RPM) is different than dealing with other kAPIs used on media, as most pm_runtime_get_*() functions won't return to the the state before the call if an error rises. They, instead, increment an usage_count. Due to that, there were several bugs on media. Just on this review, we found 24 such errors. So, let's use pm_runtime_resume_and_get() whenever possible, as it has two advantages over : 1. On errors, it decrements the usage count; 2. It always return zero on success or an error code. This prevents a common error pattern of checking if ret is not zero to identify for errors. There are however a few places where calls to pm_runtime_get_sync() are kept. On several of those, a comment was added, in order to help preventing trivial patches that could try to change them. PS.: This series was submitted already together with the fix patches at: https://lore.kernel.org/linux-media/cover.1619621413.git.mchehab+huawei@xxxxxxxxxx/ I opted to break it on 3 parts, in order to make easier to review. This is the third (and final) part. Mauro Carvalho Chehab (25): staging: media: imx7-mipi-csis: use pm_runtime_resume_and_get() staging: media: atomisp: use pm_runtime_resume_and_get() staging: media: ipu3: use pm_runtime_resume_and_get() staging: media: cedrus_video: use pm_runtime_resume_and_get() staging: media: tegra-vde: use pm_runtime_resume_and_get() staging: media: tegra-video: use pm_runtime_resume_and_get() media: rockchip/rga: use pm_runtime_resume_and_get() media: sti/hva: use pm_runtime_resume_and_get() media: ipu3: use pm_runtime_resume_and_get() media: coda: use pm_runtime_resume_and_get() media: mtk-jpeg: use pm_runtime_resume_and_get() media: camss: use pm_runtime_resume_and_get() media: venus: core: use pm_runtime_resume_and_get() media: venus: vdec: use pm_runtime_resume_and_get() media: venus: venc: use pm_runtime_resume_and_get() media: rcar-fcp: use pm_runtime_resume_and_get() media: rkisp1: use pm_runtime_resume_and_get() media: s3c-camif: use pm_runtime_resume_and_get() media: s5p-mfc: use pm_runtime_resume_and_get() media: stm32: use pm_runtime_resume_and_get() media: sunxi: use pm_runtime_resume_and_get() media: ti-vpe: use pm_runtime_resume_and_get() media: vsp1: use pm_runtime_resume_and_get() media: rcar-vin: use pm_runtime_resume_and_get() media: hantro: use pm_runtime_resume_and_get() drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 3 +-- drivers/media/platform/coda/coda-common.c | 7 ++++--- .../media/platform/mtk-jpeg/mtk_jpeg_core.c | 4 ++-- .../media/platform/qcom/camss/camss-csid.c | 6 ++---- .../media/platform/qcom/camss/camss-csiphy.c | 6 ++---- .../media/platform/qcom/camss/camss-ispif.c | 6 ++---- drivers/media/platform/qcom/camss/camss-vfe.c | 5 +++-- .../media/platform/qcom/venus/pm_helpers.c | 3 +-- drivers/media/platform/qcom/venus/vdec.c | 6 +++--- drivers/media/platform/qcom/venus/venc.c | 5 +++-- drivers/media/platform/rcar-fcp.c | 8 +------ drivers/media/platform/rcar-vin/rcar-csi2.c | 15 ++++++++++--- drivers/media/platform/rcar-vin/rcar-dma.c | 6 ++---- drivers/media/platform/rcar-vin/rcar-v4l2.c | 6 ++---- drivers/media/platform/rockchip/rga/rga-buf.c | 3 +-- drivers/media/platform/rockchip/rga/rga.c | 4 +++- .../platform/rockchip/rkisp1/rkisp1-capture.c | 3 +-- .../media/platform/s3c-camif/camif-capture.c | 2 +- drivers/media/platform/s3c-camif/camif-core.c | 5 +++-- drivers/media/platform/s5p-mfc/s5p_mfc_pm.c | 6 ++---- drivers/media/platform/sti/hva/hva-hw.c | 17 ++++++++------- drivers/media/platform/stm32/stm32-dcmi.c | 5 +++-- .../platform/sunxi/sun4i-csi/sun4i_v4l2.c | 6 ++++-- drivers/media/platform/ti-vpe/cal-video.c | 4 +++- drivers/media/platform/ti-vpe/cal.c | 8 ++++--- drivers/media/platform/ti-vpe/vpe.c | 8 +++---- drivers/media/platform/vsp1/vsp1_drv.c | 10 +-------- .../staging/media/atomisp/pci/atomisp_fops.c | 6 +++--- drivers/staging/media/hantro/hantro_drv.c | 5 ++--- drivers/staging/media/imx/imx7-mipi-csis.c | 7 +++---- drivers/staging/media/ipu3/ipu3.c | 3 +-- .../staging/media/sunxi/cedrus/cedrus_video.c | 6 ++---- drivers/staging/media/tegra-vde/vde.c | 21 ++++++++++++++++--- drivers/staging/media/tegra-video/csi.c | 3 +-- drivers/staging/media/tegra-video/vi.c | 3 +-- 35 files changed, 110 insertions(+), 111 deletions(-) -- 2.30.2
