[PATCHv9 09/10] I2C: OMAP: Do not set the XUDF(Transmit underflow) if the underflow is not reached
From: Shubhrajyoti D <hidden>
Date: 2012-05-02 14:32:14
Also in:
linux-i2c, linux-omap
Subsystem:
i2c subsystem, i2c subsystem host drivers, omap i2c driver, omap1 support, omap2+ support, the rest · Maintainers:
Wolfram Sang, 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. The flag is set after wait for the condition is over. Cc: Alexander Shishkin <redacted> Acked-by: Moiz Sonasath <redacted> Signed-off-by: Shubhrajyoti D <redacted> --- 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 43b0efb..c0aa16b 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