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-rw-r--r--drivers/i2c/algos/i2c-algo-pca.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c
index 6318f7ddc1d4..78d42aae0089 100644
--- a/drivers/i2c/algos/i2c-algo-pca.c
+++ b/drivers/i2c/algos/i2c-algo-pca.c
@@ -287,10 +287,21 @@ static int pca_xfer(struct i2c_adapter *i2c_adap,
287 287
288 case 0x30: /* Data byte in I2CDAT has been transmitted; NOT ACK has been received */ 288 case 0x30: /* Data byte in I2CDAT has been transmitted; NOT ACK has been received */
289 DEB2("NOT ACK received after data byte\n"); 289 DEB2("NOT ACK received after data byte\n");
290 pca_stop(adap);
290 goto out; 291 goto out;
291 292
292 case 0x38: /* Arbitration lost during SLA+W, SLA+R or data bytes */ 293 case 0x38: /* Arbitration lost during SLA+W, SLA+R or data bytes */
293 DEB2("Arbitration lost\n"); 294 DEB2("Arbitration lost\n");
295 /*
296 * The PCA9564 data sheet (2006-09-01) says "A
297 * START condition will be transmitted when the
298 * bus becomes free (STOP or SCL and SDA high)"
299 * when the STA bit is set (p. 11).
300 *
301 * In case this won't work, try pca_reset()
302 * instead.
303 */
304 pca_start(adap);
294 goto out; 305 goto out;
295 306
296 case 0x58: /* Data byte has been received; NOT ACK has been returned */ 307 case 0x58: /* Data byte has been received; NOT ACK has been returned */