Re: [PATCH] i2c: drivers: Avoid unnecessary check inefm32_i2c_probe()

From: Tang Bin
Date: Wed Apr 15 2020 - 21:29:10 EST


Hi Uwe:

On 2020/4/15 22:31, Uwe Kleine-KÃnig wrote:
Same things apply as in the previous patch. (space after punctuation,
Sob of sender should be last)
I will notice this problem next time, thanks.
---
drivers/i2c/busses/i2c-efm32.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/drivers/i2c/busses/i2c-efm32.c b/drivers/i2c/busses/i2c-efm32.c
index 4de31fae7..4786ef6b2 100644
--- a/drivers/i2c/busses/i2c-efm32.c
+++ b/drivers/i2c/busses/i2c-efm32.c
@@ -312,9 +312,6 @@ static int efm32_i2c_probe(struct platform_device *pdev)
int ret;
u32 clkdiv;
- if (!np)
- return -EINVAL;
-
I don't care much about this change. While the statement that this
driver is only instantiated on dt platforms is probably right,
explicitly checking for it might still prevent surprises later, serves
as explicit statement for the driver reader that non-dt isn't supposed
to work and given that the check is cheap I tend slightly to just keep
it.

In this driver, the function efm32_i2c_probe() can be triggered only if the platform_device and platform_driver matches, and the matching condition is DTS. It's my opinion.

Tnanks,

Tang Bin