Signed-off-by: Alexander Shishkin <virtuoso@xxxxxxxxx>
---
drivers/i2c/busses/i2c-omap.c | 21 +++++++++++++--------
1 files changed, 13 insertions(+), 8 deletions(-)
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 75bf3ad..7617f18 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -803,15 +803,20 @@ complete:
*/
if (dev->rev <= OMAP_I2C_REV_ON_3430) {
- while (!(stat & OMAP_I2C_STAT_XUDF)) {
- 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;
- goto complete;
- }
- cpu_relax();
- stat = omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG);
+ unsigned long timeout = 10000;
+
+ while (!(stat & OMAP_I2C_STAT_XUDF) && --timeout) {
+ 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;
+ goto complete;
}
+ cpu_relax();
+ stat = omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG);
+ }
+
+ if (!timeout)
+ dev_err(dev->dev, "timeout waiting on XUDF bit\n");
}
omap_i2c_write_reg(dev, OMAP_I2C_DATA_REG, w);
--
1.6.3.3
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