From: Hector Martin <marcan@xxxxxxxxx>
This ensures we get all information we need to debug issues when users
forward us their logs.
Signed-off-by: Hector Martin <marcan@xxxxxxxxx>
Signed-off-by: Sven Peter <sven@xxxxxxxxxxxxx>
---
drivers/i2c/busses/i2c-pasemi-core.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/i2c/busses/i2c-pasemi-core.c b/drivers/i2c/busses/i2c-pasemi-core.c
index 8f0ba975172f..ae0181a76470 100644
--- a/drivers/i2c/busses/i2c-pasemi-core.c
+++ b/drivers/i2c/busses/i2c-pasemi-core.c
@@ -21,6 +21,7 @@
/* Register offsets */
#define REG_MTXFIFO 0x00
#define REG_MRXFIFO 0x04
+#define REG_XFSTA 0x0c
#define REG_SMSTA 0x14
#define REG_IMASK 0x18
#define REG_CTL 0x1c
@@ -84,7 +85,7 @@ static void pasemi_reset(struct pasemi_smbus *smbus)
static int pasemi_smb_clear(struct pasemi_smbus *smbus)
{
- unsigned int status;
+ unsigned int status, xfstatus;
int timeout = TRANSFER_TIMEOUT_MS;
status = reg_read(smbus, REG_SMSTA);
@@ -95,15 +96,21 @@ static int pasemi_smb_clear(struct pasemi_smbus *smbus)
status = reg_read(smbus, REG_SMSTA);
}
+ xfstatus = reg_read(smbus, REG_XFSTA);
+
if (timeout < 0) {
- dev_warn(smbus->dev, "Bus is still stuck (status 0x%08x)\n", status);
+ dev_warn(smbus->dev, "Bus is still stuck (status 0x%08x xfstatus 0x%08x)\n",
+ status, xfstatus);
return -EIO;
}
/* If any badness happened or there is data in the FIFOs, reset the FIFOs */
if ((status & (SMSTA_MRNE | SMSTA_JMD | SMSTA_MTO | SMSTA_TOM | SMSTA_MTN | SMSTA_MTA)) ||
- !(status & SMSTA_MTE))
+ !(status & SMSTA_MTE)) {
+ dev_warn(smbus->dev, "Issuing reset due to status 0x%08x (xfstatus 0x%08x)\n",
+ status, xfstatus);
pasemi_reset(smbus);
+ }
/* Clear the flags */
reg_write(smbus, REG_SMSTA, status);
--
2.34.1
