drm/loongson: Fix error handling in lsdc_pixel_pll_setup()

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There are two problems in lsdc_pixel_pll_setup()
1. If kzalloc() fails then call iounmap() to release the resources.
2. Both kzalloc and ioremap does not return error pointers on failure, so
   using IS_ERR_OR_NULL() checks is a bit confusing and not very right,
   fix this by changing those to NULL checks instead.

Fixes: f39db26c54 ("drm: Add kms driver for loongson display controller")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Link: https://patchwork.freedesktop.org/patch/msgid/20230720123950.543082-1-harshit.m.mogalapalli@oracle.com

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Harshit Mogalapalli 2023-07-20 05:39:50 -07:00 • committed by Sui Jingfeng

parent b31f784fff

commit 5976a28b34

1 changed files with 4 additions and 2 deletions

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drivers/gpu/drm/loongson/lsdc_pixpll.c

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