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mfd: aat2870: Use scnprintf() for avoiding potential buffer overflow 

There is still one call of sprintf() without checking the proper
buffer overflow in aat2870_dump_reg().  Replace it with scnprintf()
call for covering that.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Takashi Iwai 2020-03-11 08:47:38 +01:00 committed by Lee Jones
parent e3fadb35bc
commit c2b5fdfba2
1 changed files with 1 additions and 1 deletions
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drivers/mfd/aat2870-core.c
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@ -221,7 +221,7 @@ static ssize_t aat2870_dump_reg(struct aat2870_data *aat2870, char *buf)
count += sprintf(buf, "aat2870 registers\n"); count += sprintf(buf, "aat2870 registers\n");
for (addr = 0; addr < AAT2870_REG_NUM; addr++) { for (addr = 0; addr < AAT2870_REG_NUM; addr++) {
count += sprintf(buf + count, "0x%02x: ", addr); count += snprintf(buf + count, PAGE_SIZE - count, "0x%02x: ", addr);
if (count >= PAGE_SIZE - 1) if (count >= PAGE_SIZE - 1)
break; break;