Messages in this thread Patch in this message | | | From | Ben Gardner <> | Subject | [patch] w1_ds2433: clear the validcrc flag after a write | Date | Sun, 22 Feb 2009 22:19:16 -0600 |
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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 <gardner.ben@gmail.com> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
--- linux-2.6.28.5.orig/drivers/w1/slaves/w1_ds2433.c 2009-02-16 13:52:06.000000000 -0600 +++ linux-2.6.28.5/drivers/w1/slaves/w1_ds2433.c 2009-02-16 13:52:27.000000000 -0600 @@ -156,6 +156,9 @@ */ 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 @@ /* 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; }
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