Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit dca17146 authored by Ben Gardner's avatar Ben Gardner Committed by Linus Torvalds
Browse files

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: default avatarBen Gardner <gardner.ben@gmail.com>
Signed-off-by: default avatarEvgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 221be177

drivers/w1/slaves/w1_ds2433.c

+6 −1
Original line number Diff line number Diff line
@@ -156,6 +156,9 @@ static ssize_t w1_f23_read_bin(struct kobject *kobj, 
 */

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;

}