Messages in this thread Patch in this message | | | From | Andy Shevchenko <> | Subject | [PATCH v1 1/3] auxdisplay: lcd2s: Fix lcd2s_redefine_char() feature | Date | Wed, 23 Feb 2022 17:47:16 +0200 |
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It seems that the lcd2s_redefine_char() has never been properly tested. The buffer is filled by DEF_CUSTOM_CHAR command followed by the character number (from 0 to 7), but immediately after that these bytes are got rewritten by the decoded hex stream.
Fix the index to fill the buffer after the command and number.
Fixes: 8c9108d014c5 ("auxdisplay: add a driver for lcd2s character display") Cc: Lars Poeschel <poeschel@lemonage.de> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- drivers/auxdisplay/lcd2s.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/auxdisplay/lcd2s.c b/drivers/auxdisplay/lcd2s.c index 38ba08628ccb..ea9d75ad4f16 100644 --- a/drivers/auxdisplay/lcd2s.c +++ b/drivers/auxdisplay/lcd2s.c @@ -238,7 +238,7 @@ static int lcd2s_redefine_char(struct charlcd *lcd, char *esc) if (buf[1] > 7) return 1; - i = 0; + i = 2; shift = 0; value = 0; while (*esc && i < LCD2S_CHARACTER_SIZE + 2) { -- 2.34.1
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