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splash: Prevent splash_load_fs from writing to 0x0 

Passing NULL to fs_read() for actread value results in hanging U-Boot
at least on our ARM plattform (TI AM335x). Since fs_read() and
following functions do not catch nullpointers, writing to 0x0 occurs.

Passing a local dummy var instead of NULL solves this issue.

Signed-off-by: Jonathan Golder <jonathan.golder@kurz-elektronik.de>
Cc: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Jonathan Golder 2017-02-24 17:46:10 +01:00 committed by Anatolij Gustschin
parent a0f3e3df4a
commit 3cc6e7070d
1 changed files with 2 additions and 1 deletions
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3
common/splash_source.c
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@ -216,6 +216,7 @@ static int splash_load_fs(struct splash_location *location, u32 bmp_load_addr)
{
int res = 0;
loff_t bmp_size;
loff_t actread;
char *splash_file;
splash_file = getenv("splashfile");
@ -251,7 +252,7 @@ static int splash_load_fs(struct splash_location *location, u32 bmp_load_addr)
}
splash_select_fs_dev(location);
res = fs_read(splash_file, bmp_load_addr, 0, 0, NULL);
res = fs_read(splash_file, bmp_load_addr, 0, 0, &actread);
out:
if (location->ubivol != NULL)