From: Ben Gardner Date: Fri, 27 Feb 2009 22:02:58 +0000 (-0800) Subject: w1_ds2433: clear the validcrc flag after a write X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dca17146f4b72b8966016c406d94ad3e48289b79;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git w1_ds2433: clear the validcrc flag after a write The w1_ds2433 driver does not read from the hardware if the CRC was valid on the last read. The validcrc flag should be cleared after a write so that the new value can be read. Signed-off-by: Ben Gardner Signed-off-by: Evgeniy Polyakov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/w1/slaves/w1_ds2433.c b/drivers/w1/slaves/w1_ds2433.c index 858c16a544c2..139447148822 100644 --- a/drivers/w1/slaves/w1_ds2433.c +++ b/drivers/w1/slaves/w1_ds2433.c @@ -156,6 +156,9 @@ out_up: */ static int w1_f23_write(struct w1_slave *sl, int addr, int len, const u8 *data) { +#ifdef CONFIG_W1_SLAVE_DS2433_CRC + struct w1_f23_data *f23 = sl->family_data; +#endif u8 wrbuf[4]; u8 rdbuf[W1_PAGE_SIZE + 3]; u8 es = (addr + len - 1) & 0x1f; @@ -196,7 +199,9 @@ static int w1_f23_write(struct w1_slave *sl, int addr, int len, const u8 *data) /* Reset the bus to wake up the EEPROM (this may not be needed) */ w1_reset_bus(sl->master); - +#ifdef CONFIG_W1_SLAVE_DS2433_CRC + f23->validcrc &= ~(1 << (addr >> W1_PAGE_BITS)); +#endif return 0; }