Re: [RFC v1 PATCH 3/3] driver: update all the code that use soc_device_match

Péter Ujfalusi
2021-04-20T09:39:07Z

Hi Alice,

On 4/19/21 7:27 AM, Alice Guo (OSS) wrote:
> From: Alice Guo <alice.guo@nxp.com>
>
> Update all the code that use soc_device_match because add support for
> soc_device_match returning -EPROBE_DEFER.
>
> Signed-off-by: Alice Guo <alice.guo@nxp.com>
> ---
> drivers/bus/ti-sysc.c | 2 +-
> drivers/clk/renesas/r8a7795-cpg-mssr.c | 4 +++-
> drivers/clk/renesas/rcar-gen2-cpg.c | 2 +-
> drivers/clk/renesas/rcar-gen3-cpg.c | 2 +-
> drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c | 7 ++++++-
> drivers/dma/ti/k3-psil.c | 3 +++
> drivers/dma/ti/k3-udma.c | 2 +-
> drivers/gpu/drm/bridge/nwl-dsi.c | 2 +-
> drivers/gpu/drm/meson/meson_drv.c | 4 +++-
> drivers/gpu/drm/omapdrm/dss/dispc.c | 2 +-
> drivers/gpu/drm/omapdrm/dss/dpi.c | 4 +++-
> drivers/gpu/drm/omapdrm/dss/dsi.c | 3 +++
> drivers/gpu/drm/omapdrm/dss/dss.c | 3 +++
> drivers/gpu/drm/omapdrm/dss/hdmi4_core.c | 3 +++
> drivers/gpu/drm/omapdrm/dss/venc.c | 4 +++-
> drivers/gpu/drm/omapdrm/omap_drv.c | 3 +++
> drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 4 +++-
> drivers/gpu/drm/rcar-du/rcar_lvds.c | 2 +-
> drivers/gpu/drm/tidss/tidss_dispc.c | 4 +++-
> drivers/iommu/ipmmu-vmsa.c | 7 +++++--
> drivers/media/platform/rcar-vin/rcar-core.c | 2 +-
> drivers/media/platform/rcar-vin/rcar-csi2.c | 2 +-
> drivers/media/platform/vsp1/vsp1_uif.c | 4 +++-
> drivers/mmc/host/renesas_sdhi_core.c | 2 +-
> drivers/mmc/host/renesas_sdhi_internal_dmac.c | 2 +-
> drivers/mmc/host/sdhci-of-esdhc.c | 21 ++++++++++++++-----
> drivers/mmc/host/sdhci-omap.c | 2 +-
> drivers/mmc/host/sdhci_am654.c | 2 +-
> drivers/net/ethernet/renesas/ravb_main.c | 4 +++-
> drivers/net/ethernet/ti/am65-cpsw-nuss.c | 2 +-
> drivers/net/ethernet/ti/cpsw.c | 2 +-
> drivers/net/ethernet/ti/cpsw_new.c | 2 +-
> drivers/phy/ti/phy-omap-usb2.c | 4 +++-
> drivers/pinctrl/renesas/core.c | 2 +-
> drivers/pinctrl/renesas/pfc-r8a7790.c | 5 ++++-
> drivers/pinctrl/renesas/pfc-r8a7794.c | 5 ++++-
> drivers/soc/fsl/dpio/dpio-driver.c | 13 ++++++++----
> drivers/soc/renesas/r8a774c0-sysc.c | 5 ++++-
> drivers/soc/renesas/r8a7795-sysc.c | 2 +-
> drivers/soc/renesas/r8a77990-sysc.c | 5 ++++-
> drivers/soc/ti/k3-ringacc.c | 2 +-
> drivers/staging/mt7621-pci/pci-mt7621.c | 2 +-
> drivers/thermal/rcar_gen3_thermal.c | 4 +++-
> drivers/thermal/ti-soc-thermal/ti-bandgap.c | 10 +++++++--
> drivers/usb/gadget/udc/renesas_usb3.c | 2 +-
> drivers/usb/host/ehci-platform.c | 4 +++-
> drivers/usb/host/xhci-rcar.c | 2 +-
> drivers/watchdog/renesas_wdt.c | 2 +-
> 48 files changed, 131 insertions(+), 52 deletions(-)
>

...

> diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
> index 96ad21869ba7..50a4c8f0993d 100644
> --- a/drivers/dma/ti/k3-udma.c
> +++ b/drivers/dma/ti/k3-udma.c
> @@ -5188,7 +5188,7 @@ static int udma_probe(struct platform_device *pdev)
> ud->match_data = match->data;
>
> soc = soc_device_match(k3_soc_devices);
> - if (!soc) {
> + if (!IS_ERR(soc) && !soc) {

this does not sound right...

if (!soc || IS_ERR(soc))
or
if (IS_ERR_OR_NULL(soc))
is even better.

> dev_err(dev, "No compatible SoC found\n");
> return -ENODEV;

There might be a clever macro for it, but:

return soc ? PTR_ERR(soc) : -ENODEV;

> }

--
Péter