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| author | Gabor Juhos <juhosg@openwrt.org> | 2011-12-15 13:25:23 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2011-12-15 13:25:23 +0000 |
| commit | b7d7481b078608d6187c5bf433ea3dccf9b394e7 (patch) | |
| tree | 901399f92597697c280d0a2d78114c4a6561e86f /target | |
| parent | 0655552860c1439183371307cfe3b5e1247c11d6 (diff) | |
| download | mtk-20170518-b7d7481b078608d6187c5bf433ea3dccf9b394e7.zip mtk-20170518-b7d7481b078608d6187c5bf433ea3dccf9b394e7.tar.gz mtk-20170518-b7d7481b078608d6187c5bf433ea3dccf9b394e7.tar.bz2 | |
ar71xx: ag71xx: check PHY IDs before accessing the switch registers
SVN-Revision: 29541
Diffstat (limited to 'target')
| -rw-r--r-- | target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ar7240.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ar7240.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ar7240.c index ffc4948..c0eca4a 100644 --- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ar7240.c +++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ar7240.c @@ -852,6 +852,14 @@ static struct ar7240sw *ar7240_probe(struct ag71xx *ag) u8 ver; int i; + phy_id1 = ar7240sw_phy_read(mii, 0, MII_PHYSID1); + phy_id2 = ar7240sw_phy_read(mii, 0, MII_PHYSID2); + if (phy_id1 != AR7240_PHY_ID1 || phy_id2 != AR7240_PHY_ID2) { + pr_err("%s: unknown phy id '%04x:%04x'\n", + ag->dev->name, phy_id1, phy_id2); + return NULL; + } + as = kzalloc(sizeof(*as), GFP_KERNEL); if (!as) return NULL; @@ -859,7 +867,6 @@ static struct ar7240sw *ar7240_probe(struct ag71xx *ag) as->mii_bus = mii; ctrl = ar7240sw_reg_read(mii, AR7240_REG_MASK_CTRL); - ver = (ctrl >> AR7240_MASK_CTRL_VERSION_S) & AR7240_MASK_CTRL_VERSION_M; if (ver != 1) { pr_err("%s: unsupported chip, ctrl=%08x\n", @@ -867,14 +874,6 @@ static struct ar7240sw *ar7240_probe(struct ag71xx *ag) return NULL; } - phy_id1 = ar7240sw_phy_read(mii, 0, MII_PHYSID1); - phy_id2 = ar7240sw_phy_read(mii, 0, MII_PHYSID2); - if (phy_id1 != AR7240_PHY_ID1 || phy_id2 != AR7240_PHY_ID2) { - pr_err("%s: unknown phy id '%04x:%04x'\n", - ag->dev->name, phy_id1, phy_id2); - return NULL; - } - swdev = &as->swdev; swdev->name = "AR7240 built-in switch"; swdev->ports = AR7240_NUM_PORTS - 1; |