From: Richard woodruff <r-woodruff2@xxxxxx>
ProDB00017052 - ARDY interrupt reasserted after being cleared.
This errata caused intermittent i2c instabilty(1 error per 3 hours) on several
customer platforms. After applying the workaround the intermittent errors were
not seen. This is not captured in the usual errata documents.
The workaround is to have a double clear of ARDY status in
irq handler.
Signed-off-by: Richard woodruff <r-woodruff2@xxxxxx>
Signed-off-by: Keerthy <j-keerthy@xxxxxx>
---
drivers/i2c/busses/i2c-omap.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 445de08..9bcefae 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -851,7 +851,8 @@ complete:
OMAP_I2C_STAT_AL)) {
omap_i2c_ack_stat(dev, stat &
(OMAP_I2C_STAT_RRDY | OMAP_I2C_STAT_RDR |
- OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR));
+ OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR |
+ OMAP_I2C_STAT_ARDY));
omap_i2c_complete_cmd(dev, err);
return IRQ_HANDLED;
}
--
1.7.0.4
--
To unsubscribe from this list: send the line "unsubscribe linux-i2c" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
