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| author | Nikita Kiryanov <nikita@compulab.co.il> | 2012-08-19 19:32:30 +0000 |
|---|---|---|
| committer | Anatolij Gustschin <agust@denx.de> | 2012-09-21 23:41:56 +0200 |
| commit | 1b09b53e7dda7f8d4e7ec2927137f3b71327955a (patch) | |
| tree | a1172dba5c830358ac395235f76605c4c836a65d | |
| parent | bfdcc65e1163b4891643c2a670570c478b9af2a4 (diff) | |
| download | u-boot-imx-1b09b53e7dda7f8d4e7ec2927137f3b71327955a.zip u-boot-imx-1b09b53e7dda7f8d4e7ec2927137f3b71327955a.tar.gz u-boot-imx-1b09b53e7dda7f8d4e7ec2927137f3b71327955a.tar.bz2 | |
common/lcd: add protection from null bmp pointer
If the bmp pointer is null then U-Boot will get stuck when trying
to load the image.
What's worse, it will get stuck before the U-Boot shell becomes
available to the user, thus making it difficult to correct the
situation.
To protect from the above scenario, check if the pointer is valid.
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
| -rw-r--r-- | common/lcd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/common/lcd.c b/common/lcd.c index 88dfa51..fcc09ac 100644 --- a/common/lcd.c +++ b/common/lcd.c @@ -674,7 +674,7 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y) unsigned long pwidth = panel_info.vl_col; unsigned colors, bpix, bmp_bpix; - if (!((bmp->header.signature[0] == 'B') && + if (!bmp || !((bmp->header.signature[0] == 'B') && (bmp->header.signature[1] == 'M'))) { printf("Error: no valid bmp image at %lx\n", bmp_image); |