diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-mpc.c')
-rw-r--r-- | drivers/i2c/busses/i2c-mpc.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index f7a81e999672..d8de4ac88b7d 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c | |||
@@ -105,6 +105,7 @@ static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing) | |||
105 | schedule(); | 105 | schedule(); |
106 | if (time_after(jiffies, orig_jiffies + timeout)) { | 106 | if (time_after(jiffies, orig_jiffies + timeout)) { |
107 | pr_debug("I2C: timeout\n"); | 107 | pr_debug("I2C: timeout\n"); |
108 | writeccr(i2c, 0); | ||
108 | result = -EIO; | 109 | result = -EIO; |
109 | break; | 110 | break; |
110 | } | 111 | } |
@@ -116,10 +117,12 @@ static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing) | |||
116 | result = wait_event_interruptible_timeout(i2c->queue, | 117 | result = wait_event_interruptible_timeout(i2c->queue, |
117 | (i2c->interrupt & CSR_MIF), timeout * HZ); | 118 | (i2c->interrupt & CSR_MIF), timeout * HZ); |
118 | 119 | ||
119 | if (unlikely(result < 0)) | 120 | if (unlikely(result < 0)) { |
120 | pr_debug("I2C: wait interrupted\n"); | 121 | pr_debug("I2C: wait interrupted\n"); |
121 | else if (unlikely(!(i2c->interrupt & CSR_MIF))) { | 122 | writeccr(i2c, 0); |
123 | } else if (unlikely(!(i2c->interrupt & CSR_MIF))) { | ||
122 | pr_debug("I2C: wait timeout\n"); | 124 | pr_debug("I2C: wait timeout\n"); |
125 | writeccr(i2c, 0); | ||
123 | result = -ETIMEDOUT; | 126 | result = -ETIMEDOUT; |
124 | } | 127 | } |
125 | 128 | ||
@@ -172,7 +175,6 @@ static void mpc_i2c_start(struct mpc_i2c *i2c) | |||
172 | static void mpc_i2c_stop(struct mpc_i2c *i2c) | 175 | static void mpc_i2c_stop(struct mpc_i2c *i2c) |
173 | { | 176 | { |
174 | writeccr(i2c, CCR_MEN); | 177 | writeccr(i2c, CCR_MEN); |
175 | writeccr(i2c, 0); | ||
176 | } | 178 | } |
177 | 179 | ||
178 | static int mpc_write(struct mpc_i2c *i2c, int target, | 180 | static int mpc_write(struct mpc_i2c *i2c, int target, |
@@ -261,6 +263,7 @@ static int mpc_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) | |||
261 | while (readb(i2c->base + MPC_I2C_SR) & CSR_MBB) { | 263 | while (readb(i2c->base + MPC_I2C_SR) & CSR_MBB) { |
262 | if (signal_pending(current)) { | 264 | if (signal_pending(current)) { |
263 | pr_debug("I2C: Interrupted\n"); | 265 | pr_debug("I2C: Interrupted\n"); |
266 | writeccr(i2c, 0); | ||
264 | return -EINTR; | 267 | return -EINTR; |
265 | } | 268 | } |
266 | if (time_after(jiffies, orig_jiffies + HZ)) { | 269 | if (time_after(jiffies, orig_jiffies + HZ)) { |