Re: [PATCH 3/3] can: mscan: mpc5xxx_can: Useof_device_get_match_data to simplify code

Hi Marc:

On 2021/8/23 20:37, Marc Kleine-Budde wrote:

On 23.08.2021 19:33:38, Tang Bin wrote:

quoted

Retrieve OF match data, it's better and cleaner to use
'of_device_get_match_data' over 'of_match_device'.

Signed-off-by: Tang Bin <redacted>

Thanks for the patch!

LGTM, comment inside.

quoted

---
  drivers/net/can/mscan/mpc5xxx_can.c | 6 ++----
  1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/can/mscan/mpc5xxx_can.c b/drivers/net/can/mscan/mpc5xxx_can.c
index e254e04ae..3b7465acd 100644
--- a/drivers/net/can/mscan/mpc5xxx_can.c
+++ b/drivers/net/can/mscan/mpc5xxx_can.c

@@ -279,7 +279,6 @@ static u32 mpc512x_can_get_clock(struct platform_device *ofdev,
  static const struct of_device_id mpc5xxx_can_table[];
  static int mpc5xxx_can_probe(struct platform_device *ofdev)
  {
-	const struct of_device_id *match;
  	const struct mpc5xxx_can_data *data;
  	struct device_node *np = ofdev->dev.of_node;
  	struct net_device *dev;

@@ -289,10 +288,9 @@ static int mpc5xxx_can_probe(struct platform_device *ofdev)
  	int irq, mscan_clksrc = 0;
  	int err = -ENOMEM;
  
-	match = of_match_device(mpc5xxx_can_table, &ofdev->dev);
-	if (!match)
+	data = of_device_get_match_data(&ofdev->dev);
+	if (!data)
  		return -EINVAL;

Please remove the "BUG_ON(!data)", which comes later.

For this place, may I send another patch to fix this 'BUG_ON()' by itself, not in this patch series?

Thanks

Tang Bin

quoted

-	data = match->data;
  
  	base = of_iomap(np, 0);
  	if (!base) {
-- 
2.20.1.windows.1

regards,
Marc