[PATCH net] net: bgmac: fix BCM5358 support by setting correct flags

[PATCH net] net: bgmac: fix BCM5358 support by setting correct flags

[Rafał Miłecki]

From: Rafał Miłecki <rafal@milecki.pl>

Code blocks handling BCMA_CHIP_ID_BCM5357 and BCMA_CHIP_ID_BCM53572 were
incorrectly unified. Chip package values are not unique and cannot be
checked independently. They are meaningful only in a context of a given
chip.

Packages BCM5358 and BCM47188 share the same value but then belong to
different chips. Code unification resulted in treating BCM5358 as
BCM47188 and broke its initialization.

Link: https://github.com/openwrt/openwrt/issues/8278
Fixes: cb1b0f90acfe ("net: ethernet: bgmac: unify code of the same family")
Cc: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
 drivers/net/ethernet/broadcom/bgmac-bcma.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bgmac-bcma.c b/drivers/net/ethernet/broadcom/bgmac-bcma.c
index 02bd3cf9a260..6e4f36aaf5db 100644
--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
@@ -240,12 +240,12 @@ static int bgmac_probe(struct bcma_device *core)
 		bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
 		bgmac->feature_flags |= BGMAC_FEAT_FLW_CTRL1;
 		bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_PHY;
-		if (ci->pkg == BCMA_PKG_ID_BCM47188 ||
-		    ci->pkg == BCMA_PKG_ID_BCM47186) {
+		if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == BCMA_PKG_ID_BCM47186) ||
+		    (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg == BCMA_PKG_ID_BCM47188)) {
 			bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_RGMII;
 			bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED;
 		}
-		if (ci->pkg == BCMA_PKG_ID_BCM5358)
+		if (ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == BCMA_PKG_ID_BCM5358)
 			bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_EPHYRMII;
 		break;
 	case BCMA_CHIP_ID_BCM53573:
-- 
2.34.1


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Re: [PATCH net] net: bgmac: fix BCM5358 support by setting correct flags

[Florian Fainelli]

On 2/8/23 01:16, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal@milecki.pl>
> 
> Code blocks handling BCMA_CHIP_ID_BCM5357 and BCMA_CHIP_ID_BCM53572 were
> incorrectly unified. Chip package values are not unique and cannot be
> checked independently. They are meaningful only in a context of a given
> chip.
> 
> Packages BCM5358 and BCM47188 share the same value but then belong to
> different chips. Code unification resulted in treating BCM5358 as
> BCM47188 and broke its initialization.
> 
> Link: https://github.com/openwrt/openwrt/issues/8278
> Fixes: cb1b0f90acfe ("net: ethernet: bgmac: unify code of the same family")
> Cc: Jon Mason <jdmason@kudzu.us>
> Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian


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Re: [PATCH net] net: bgmac: fix BCM5358 support by setting correct flags

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@kernel.org>:

On Wed,  8 Feb 2023 10:16:37 +0100 you wrote:
> From: Rafał Miłecki <rafal@milecki.pl>
> 
> Code blocks handling BCMA_CHIP_ID_BCM5357 and BCMA_CHIP_ID_BCM53572 were
> incorrectly unified. Chip package values are not unique and cannot be
> checked independently. They are meaningful only in a context of a given
> chip.
> 
> [...]

Here is the summary with links:
  - [net] net: bgmac: fix BCM5358 support by setting correct flags
    https://git.kernel.org/netdev/net/c/d61615c366a4

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
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