[PATCH v2 net-next] liquidio: fix bug in soft reset failure detection

[PATCH v2 net-next] liquidio: fix bug in soft reset failure detection

[Felix Manlunas]

From: Derek Chickles <derek.chickles@cavium.com>

The code that detects a failed soft reset of Octeon is comparing the wrong
value against the reset value of the Octeon SLI_SCRATCH_1 register,
resulting in an inability to detect a soft reset failure.  Fix it by using
the correct value in the comparison, which is any non-zero value.

Fixes: f21fb3ed364b ("Add support of Cavium Liquidio ethernet adapters")
Fixes: c0eab5b3580a ("liquidio: CN23XX firmware download")
Signed-off-by: Derek Chickles <derek.chickles@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
---
Patch Changelog:
 v2: Revise patch comment, remove unnecessary "!= 0x0ULL" in if statements,
     and add "Fixes:" tags

 drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c | 2 +-
 drivers/net/ethernet/cavium/liquidio/cn66xx_device.c    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
index 6081c31..4b0ca9f 100644
--- a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
@@ -221,7 +221,7 @@ static int cn23xx_pf_soft_reset(struct octeon_device *oct)
 	/* Wait for 100ms as Octeon resets. */
 	mdelay(100);
 
-	if (octeon_read_csr64(oct, CN23XX_SLI_SCRATCH1) == 0x1234ULL) {
+	if (octeon_read_csr64(oct, CN23XX_SLI_SCRATCH1)) {
 		dev_err(&oct->pci_dev->dev, "OCTEON[%d]: Soft reset failed\n",
 			oct->octeon_id);
 		return 1;
diff --git a/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c b/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c
index b28253c..2df7440 100644
--- a/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c
@@ -44,7 +44,7 @@ int lio_cn6xxx_soft_reset(struct octeon_device *oct)
 	/* Wait for 10ms as Octeon resets. */
 	mdelay(100);
 
-	if (octeon_read_csr64(oct, CN6XXX_SLI_SCRATCH1) == 0x1234ULL) {
+	if (octeon_read_csr64(oct, CN6XXX_SLI_SCRATCH1)) {
 		dev_err(&oct->pci_dev->dev, "Soft reset failed\n");
 		return 1;
 	}

Re: [PATCH v2 net-next] liquidio: fix bug in soft reset failure detection

[Leon Romanovsky]

[-- Attachment #1: Type: text/plain, Size: 1170 bytes --]

On Wed, Jul 05, 2017 at 11:59:27AM -0700, Felix Manlunas wrote:
> From: Derek Chickles <derek.chickles@cavium.com>
>
> The code that detects a failed soft reset of Octeon is comparing the wrong
> value against the reset value of the Octeon SLI_SCRATCH_1 register,
> resulting in an inability to detect a soft reset failure.  Fix it by using
> the correct value in the comparison, which is any non-zero value.
>
> Fixes: f21fb3ed364b ("Add support of Cavium Liquidio ethernet adapters")
> Fixes: c0eab5b3580a ("liquidio: CN23XX firmware download")
> Signed-off-by: Derek Chickles <derek.chickles@cavium.com>
> Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
> ---
> Patch Changelog:
>  v2: Revise patch comment, remove unnecessary "!= 0x0ULL" in if statements,
>      and add "Fixes:" tags
>
>  drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c | 2 +-
>  drivers/net/ethernet/cavium/liquidio/cn66xx_device.c    | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>

Thanks,
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]