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| author | Rafał Miłecki <rafal@milecki.pl> | 2016-11-07 14:29:57 +0100 |
|---|---|---|
| committer | Rafał Miłecki <rafal@milecki.pl> | 2016-11-07 14:30:32 +0100 |
| commit | 4fae9db765f8af24c5b9d62801864ca0f386b0b5 (patch) | |
| tree | 9a4db52177e49c97c1bdf43aae63c530bdc3cde5 | |
| parent | 578f7b9c597b0ea9bcf0726cc681713c0672edfe (diff) | |
| download | upstream-4fae9db765f8af24c5b9d62801864ca0f386b0b5.tar.gz upstream-4fae9db765f8af24c5b9d62801864ca0f386b0b5.tar.bz2 upstream-4fae9db765f8af24c5b9d62801864ca0f386b0b5.zip | |
kernel: fix bgmac regression causing BCM47186B0 SoC hangs
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2 files changed, 65 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.4/077-0003-net-bgmac-Fix-errant-feature-flag-check.patch b/target/linux/generic/patches-4.4/077-0003-net-bgmac-Fix-errant-feature-flag-check.patch new file mode 100644 index 0000000000..68c885b86b --- /dev/null +++ b/target/linux/generic/patches-4.4/077-0003-net-bgmac-Fix-errant-feature-flag-check.patch @@ -0,0 +1,33 @@ +From 4af1474e6198b10fee7bb20e81f7e033ad1b586c Mon Sep 17 00:00:00 2001 +From: Jon Mason <jon.mason@broadcom.com> +Date: Wed, 5 Oct 2016 15:36:49 -0400 +Subject: [PATCH] net: bgmac: Fix errant feature flag check +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +During the conversion to the feature flags, a check against +ci->id != BCMA_CHIP_ID_BCM47162 +became +bgmac->feature_flags & BGMAC_FEAT_CLKCTLS +instead of +!(bgmac->feature_flags & BGMAC_FEAT_CLKCTLS) + +Reported-by: Rafał Miłecki <zajec5@gmail.com> +Signed-off-by: Jon Mason <jon.mason@broadcom.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/ethernet/broadcom/bgmac.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/net/ethernet/broadcom/bgmac.c ++++ b/drivers/net/ethernet/broadcom/bgmac.c +@@ -1046,7 +1046,7 @@ static void bgmac_enable(struct bgmac *b + + mode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >> + BGMAC_DS_MM_SHIFT; +- if (bgmac->feature_flags & BGMAC_FEAT_CLKCTLST || mode != 0) ++ if (!(bgmac->feature_flags & BGMAC_FEAT_CLKCTLST) || mode != 0) + bgmac_set(bgmac, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT); + if (bgmac->feature_flags & BGMAC_FEAT_CLKCTLST && mode == 2) + bgmac_cco_ctl_maskset(bgmac, 1, ~0, diff --git a/target/linux/generic/patches-4.4/170-net-bgmac-fix-reversed-checks-for-clock-control-flag.patch b/target/linux/generic/patches-4.4/170-net-bgmac-fix-reversed-checks-for-clock-control-flag.patch new file mode 100644 index 0000000000..b4c5d7f5e3 --- /dev/null +++ b/target/linux/generic/patches-4.4/170-net-bgmac-fix-reversed-checks-for-clock-control-flag.patch @@ -0,0 +1,32 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Mon, 7 Nov 2016 13:19:42 +0100 +Subject: [PATCH] net: bgmac: fix reversed checks for clock control flag + +This fixes regression introduced by patch adding feature flags. It was +already reported and patch followed (it got accepted) but it appears it +was incorrect. Instead of fixing reversed condition it broke a good one. + +This patch was verified to actually fix SoC hanges caused by bgmac on +BCM47186B0. + +Fixes: db791eb2970b ("net: ethernet: bgmac: convert to feature flags") +Fixes: 4af1474e6198 ("net: bgmac: Fix errant feature flag check") +Cc: Jon Mason <jon.mason@broadcom.com> +--- + drivers/net/ethernet/broadcom/bgmac.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +--- a/drivers/net/ethernet/broadcom/bgmac.c ++++ b/drivers/net/ethernet/broadcom/bgmac.c +@@ -1046,9 +1046,9 @@ static void bgmac_enable(struct bgmac *b + + mode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >> + BGMAC_DS_MM_SHIFT; +- if (!(bgmac->feature_flags & BGMAC_FEAT_CLKCTLST) || mode != 0) ++ if (bgmac->feature_flags & BGMAC_FEAT_CLKCTLST || mode != 0) + bgmac_set(bgmac, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT); +- if (bgmac->feature_flags & BGMAC_FEAT_CLKCTLST && mode == 2) ++ if (!(bgmac->feature_flags & BGMAC_FEAT_CLKCTLST) && mode == 2) + bgmac_cco_ctl_maskset(bgmac, 1, ~0, + BGMAC_CHIPCTL_1_RXC_DLL_BYPASS); + |