Re: [PATCH 4/7] drivers: leds: Add the iEi WT61P803 PUZZLE LED driver

From: Pavel Machek
Date: Tue Sep 08 2020 - 18:22:24 EST


> Add support for the iEi WT61P803 PUZZLE LED driver.
> Currently only the front panel power LED is supported.
> This driver depends on the iEi WT61P803 PUZZLE MFD driver.
> Signed-off-by: Luka Kovacic <luka.kovacic@xxxxxxxxxx>
> Cc: Luka Perkov <luka.perkov@xxxxxxxxxx>

> +#define CMD_CHAR(x) (char)(x)

Come on... no need to hide this in macro.

> *resp_buf = kmalloc(IEI_WT61P803_PUZZLE_BUF_SIZE, GFP_KERNEL); + +

AFAICT you'll happily dereference NULL when kmalloc fails.

If it is small, should you just put buffer on stack?