Re: [PATCH] spi: spi-gpio: fix crash when num-chipselects is 0

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Wed, Sep 18, 2019 at 5:52 PM DENG Qingfang <dqfext@xxxxxxxxx> wrote:

> The cause is spi_gpio_setup() did not check if the spi-gpio has chipselect pins
> before setting their direction and results in derefing an invalid pointer.
>
> The bug is spotted in kernel 4.19.72 on OpenWrt, and does not occur in 4.14.
>
> There is a similar fix upstream 249e2632dcd0509b8f8f296f5aabf4d48dfd6da8.

So since this is fixed upstream I assume you mean that this should be for
stable v4.19?

I think the stable people want a special commit message structure,
see:
https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html

Yours,
Linus Walleij