diff options
| author |   Suman Tripathi <stripathi@apm.com> | 2015-06-23 14:47:17 +0530 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-06-23 07:19:21 -0700 |
| commit | c2d33bdc66e3b7db574e6b4864225cb341bffbcd (patch) | |
| tree | 2831ea538e4b73fcae941506fb3a17de24df020a /drivers/net/ethernet | |
| parent | drivers: net: xgene: Add ACPI support for SGMII0 and XFI1 interface of 2nd H/W version of APM X-Gene SoC ethernet controller. (diff) | |
| download | linux-dev-c2d33bdc66e3b7db574e6b4864225cb341bffbcd.tar.xz linux-dev-c2d33bdc66e3b7db574e6b4864225cb341bffbcd.zip | |
drivers: net: xgene: Check for IS_ERR rather than NULL for clock.
This patches fixes the code to check for IS_ERR rather
than NULL for clock interface.
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Suman Tripathi <stripathi@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c | 11 | ||||
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c | 11 |
4 files changed, 18 insertions, 11 deletions
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c index 8ff736d5971c..a626c4315a89 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c @@ -610,7 +610,7 @@ static int xgene_enet_reset(struct xgene_enet_pdata *pdata) if (!xgene_ring_mgr_init(pdata)) return -ENODEV; - if (pdata->clk) { + if (!IS_ERR(pdata->clk)) { clk_prepare_enable(pdata->clk); clk_disable_unprepare(pdata->clk); clk_prepare_enable(pdata->clk); @@ -629,7 +629,8 @@ static int xgene_enet_reset(struct xgene_enet_pdata *pdata) static void xgene_gport_shutdown(struct xgene_enet_pdata *pdata) { - clk_disable_unprepare(pdata->clk); + if (!IS_ERR(pdata->clk)) + clk_disable_unprepare(pdata->clk); } static int xgene_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum) diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c index 6c4e7ac9226f..b334f279ce8d 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c @@ -1036,7 +1036,7 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata) pdata->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(pdata->clk)) { /* Firmware may have set up the clock already. */ - pdata->clk = NULL; + dev_info(dev, "clocks have been setup already\n"); } if (pdata->phy_mode != PHY_INTERFACE_MODE_XGMII) diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c b/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c index ff240b3cb2b8..05b817e56fde 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c @@ -334,9 +334,11 @@ static int xgene_enet_reset(struct xgene_enet_pdata *p) if (!xgene_ring_mgr_init(p)) return -ENODEV; - clk_prepare_enable(p->clk); - clk_disable_unprepare(p->clk); - clk_prepare_enable(p->clk); + if (!IS_ERR(p->clk)) { + clk_prepare_enable(p->clk); + clk_disable_unprepare(p->clk); + clk_prepare_enable(p->clk); + } xgene_enet_ecc_init(p); xgene_enet_config_ring_if_assoc(p); @@ -369,7 +371,8 @@ static void xgene_enet_cle_bypass(struct xgene_enet_pdata *p, static void xgene_enet_shutdown(struct xgene_enet_pdata *p) { - clk_disable_unprepare(p->clk); + if (!IS_ERR(p->clk)) + clk_disable_unprepare(p->clk); } static void xgene_enet_link_state(struct work_struct *work) diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c b/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c index 27ba2fe3fca6..05edb847cf26 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c @@ -256,9 +256,11 @@ static int xgene_enet_reset(struct xgene_enet_pdata *pdata) if (!xgene_ring_mgr_init(pdata)) return -ENODEV; - clk_prepare_enable(pdata->clk); - clk_disable_unprepare(pdata->clk); - clk_prepare_enable(pdata->clk); + if (!IS_ERR(pdata->clk)) { + clk_prepare_enable(pdata->clk); + clk_disable_unprepare(pdata->clk); + clk_prepare_enable(pdata->clk); + } xgene_enet_ecc_init(pdata); xgene_enet_config_ring_if_assoc(pdata); @@ -285,7 +287,8 @@ static void xgene_enet_xgcle_bypass(struct xgene_enet_pdata *pdata, static void xgene_enet_shutdown(struct xgene_enet_pdata *pdata) { - clk_disable_unprepare(pdata->clk); + if (!IS_ERR(pdata->clk)) + clk_disable_unprepare(pdata->clk); } static void xgene_enet_link_state(struct work_struct *work) |