Commit Graph

3 Commits

Author SHA1 Message Date
Laura Abbott
12f92ccc5b gpio: xra1403: Switch to a fixed upper bound for registers
Geert Uytterhoeven pointed out that the number of register was a
fixed upper bound so there's no need to use a dynamically allocated
array in place of a VLA. Use the defined upper bound.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-04-27 01:06:21 +02:00
Laura Abbott
13b5319e92 gpio: Remove VLA from xra1403 driver
The new challenge is to remove VLAs from the kernel
(see https://lkml.org/lkml/2018/3/7/621)

This patch replaces a VLA with an appropriate call to kmalloc_array.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Nandor Han <nandor.han@ge.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-27 15:18:19 +02:00
Nandor Han
5704520d78 gpio: xra1403: Add EXAR XRA1403 SPI GPIO expander driver
This driver support basic XRA1403 functionalities:
    - set gpio direction
    - get gpio direction
    - set gpio high/low
    - get gpio status

Signed-off-by: Nandor Han <nandor.han@ge.com>
Signed-off-by: Semi Malinen <semi.malinen@ge.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 17:48:41 +02:00