[PATCHv10 09/11] I2C: OMAP: Do not set the XUDF(Transmit underflow) if the underflow is not reached
From: Shubhrajyoti D <hidden>
Date: 2012-05-29 10:56:21
Also in:
linux-i2c, linux-omap
Subsystem:
i2c subsystem, i2c subsystem host drivers, omap i2c driver, omap1 support, omap2+ support, the rest · Maintainers:
Andi Shyti, Vignesh R, Aaro Koskinen, Janusz Krzysztofik, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
Currently in the 1.153 errata handling, while waiting for transmitter underflow, if NACK is got the XUDF(Transmit underflow) flag is also set. Fix this by setting the XUDF(Transmit underflow) flag after wait for the condition is over. Cc: Alexander Shishkin <redacted> Acked-by: Moiz Sonasath <redacted> Reviewed-by: Kevin Hilman <redacted> Signed-off-by: Shubhrajyoti D <redacted> --- -v10 Change the punctuation and reword. -v9 XUDF is expanded to transmit underflow drivers/i2c/busses/i2c-omap.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 6129cb8..cd6feea 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c@@ -730,7 +730,6 @@ static int errata_omap3_1p153(struct omap_i2c_dev *dev, u16 *stat, int *err) if (*stat & (OMAP_I2C_STAT_NACK | OMAP_I2C_STAT_AL)) { omap_i2c_ack_stat(dev, *stat & (OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR)); - *err |= OMAP_I2C_STAT_XUDF; return -ETIMEDOUT; }
@@ -743,6 +742,7 @@ static int errata_omap3_1p153(struct omap_i2c_dev *dev, u16 *stat, int *err) return 0; } + *err |= OMAP_I2C_STAT_XUDF; return 0; }
--
1.7.5.4