usb: gadget: udc: renesas_usb3: Fix soc_device_match() abuse

soc_device_match() is intended as a last resort, to handle e.g. quirks
that cannot be handled by matching based on a compatible value.

As the device nodes for the Renesas USB 3.0 Peripheral Controller on
R-Car E3 and RZ/G2E do have SoC-specific compatible values, the latter
can and should be used to match against these devices.

This also fixes support for the USB 3.0 Peripheral Controller on the
R-Car E3e (R8A779M6) SoC, which is a different grading of the R-Car E3
(R8A77990) SoC, using the same SoC-specific compatible value.

Fixes: 30025efa8b5e75f5 ("usb: gadget: udc: renesas_usb3: add support for r8a77990")
Fixes: 546970fdab1da5fe ("usb: gadget: udc: renesas_usb3: add support for r8a774c0")
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/760981fb4cd110d7cbfc9dcffa365e7c8b25c6e5.1628696960.git.geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c
index f1b35a39d1ba8712daf42c7c754cd465e93179eb..57d417a7c3e0a687e9fbc11b604b7bdb93aedc8f 100644 (file)
--- a/drivers/usb/gadget/udc/renesas_usb3.c
+++ b/drivers/usb/gadget/udc/renesas_usb3.c
@@ -2707,10 +2707,15 @@ static const struct renesas_usb3_priv renesas_usb3_priv_r8a77990 = {
 
 static const struct of_device_id usb3_of_match[] = {
        {
+               .compatible = "renesas,r8a774c0-usb3-peri",
+               .data = &renesas_usb3_priv_r8a77990,
+       }, {
                .compatible = "renesas,r8a7795-usb3-peri",
                .data = &renesas_usb3_priv_gen3,
-       },
-       {
+       }, {
+               .compatible = "renesas,r8a77990-usb3-peri",
+               .data = &renesas_usb3_priv_r8a77990,
+       }, {
                .compatible = "renesas,rcar-gen3-usb3-peri",
                .data = &renesas_usb3_priv_gen3,
        },
@@ -2719,18 +2724,10 @@ static const struct of_device_id usb3_of_match[] = {
 MODULE_DEVICE_TABLE(of, usb3_of_match);
 
 static const struct soc_device_attribute renesas_usb3_quirks_match[] = {
-       {
-               .soc_id = "r8a774c0",
-               .data = &renesas_usb3_priv_r8a77990,
-       },
        {
                .soc_id = "r8a7795", .revision = "ES1.*",
                .data = &renesas_usb3_priv_r8a7795_es1,
        },
-       {
-               .soc_id = "r8a77990",
-               .data = &renesas_usb3_priv_r8a77990,
-       },
        { /* sentinel */ },
 };