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| author | Eddie James <eajames@linux.ibm.com> | 2019-08-27 12:12:49 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-28 22:59:18 +0200 |
| commit | 8919dfcb31161fae7d607bbef5247e5e82fd6457 (patch) | |
| tree | 0a59771afbe3b0cdd1bc18a5123cbb8c71610567 /drivers/fsi | |
| parent | 468e0ffac803f5557a62a33b72ef8844d1bfdc08 (diff) | |
| download | linux-8919dfcb31161fae7d607bbef5247e5e82fd6457.tar.gz linux-8919dfcb31161fae7d607bbef5247e5e82fd6457.tar.bz2 linux-8919dfcb31161fae7d607bbef5247e5e82fd6457.zip | |
fsi: scom: Don't abort operations for minor errors
The scom driver currently fails out of operations if certain system
errors are flagged in the status register; system checkstop, special
attention, or recoverable error. These errors won't impact the ability
of the scom engine to perform operations, so the driver should continue
under these conditions.
Also, don't do a PIB reset for these conditions, since it won't help.
Fixes: 6b293258cded ("fsi: scom: Major overhaul")
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20190827041249.13381-1-jk@ozlabs.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fsi')
| -rw-r--r-- | drivers/fsi/fsi-scom.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/fsi/fsi-scom.c b/drivers/fsi/fsi-scom.c index 343153d47e5b..004dc03ccf09 100644 --- a/drivers/fsi/fsi-scom.c +++ b/drivers/fsi/fsi-scom.c @@ -38,8 +38,7 @@ #define SCOM_STATUS_PIB_RESP_MASK 0x00007000 #define SCOM_STATUS_PIB_RESP_SHIFT 12 -#define SCOM_STATUS_ANY_ERR (SCOM_STATUS_ERR_SUMMARY | \ - SCOM_STATUS_PROTECTION | \ +#define SCOM_STATUS_ANY_ERR (SCOM_STATUS_PROTECTION | \ SCOM_STATUS_PARITY | \ SCOM_STATUS_PIB_ABORT | \ SCOM_STATUS_PIB_RESP_MASK) @@ -251,11 +250,6 @@ static int handle_fsi2pib_status(struct scom_device *scom, uint32_t status) /* Return -EBUSY on PIB abort to force a retry */ if (status & SCOM_STATUS_PIB_ABORT) return -EBUSY; - if (status & SCOM_STATUS_ERR_SUMMARY) { - fsi_device_write(scom->fsi_dev, SCOM_FSI2PIB_RESET_REG, &dummy, - sizeof(uint32_t)); - return -EIO; - } return 0; } |