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| author | Arvind Yadav <arvind.yadav.cs@gmail.com> | 2017-08-01 17:10:58 +0530 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@free-electrons.com> | 2017-08-23 16:49:20 +0200 |
| commit | 481815a6193bb7a1e43f8babecde5155e65f3858 (patch) | |
| tree | 5477fd9ac452c13e3a92ae18a68bfca5c3c5730d | |
| parent | 4d26f012ab591d7671237a6b5e990cbbfd50b0b8 (diff) | |
| download | linux-481815a6193bb7a1e43f8babecde5155e65f3858.tar.gz | |
mtd: st_spi_fsm: Handle clk_prepare_enable/clk_disable_unprepare.
- clk_prepare_enable() can fail here and we must check its return value. - stfsm_probe() can fail here and we must disable clock. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
| -rw-r--r-- | drivers/mtd/devices/st_spi_fsm.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c index 21afd94cd904..7bc29d725200 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c @@ -2073,15 +2073,17 @@ static int stfsm_probe(struct platform_device *pdev) ret = stfsm_init(fsm); if (ret) { dev_err(&pdev->dev, "Failed to initialise FSM Controller\n"); - return ret; + goto err_clk_unprepare; } stfsm_fetch_platform_configs(pdev); /* Detect SPI FLASH device */ info = stfsm_jedec_probe(fsm); - if (!info) - return -ENODEV; + if (!info) { + ret = -ENODEV; + goto err_clk_unprepare; + } fsm->info = info; /* Use device size to determine address width */ @@ -2095,11 +2097,11 @@ static int stfsm_probe(struct platform_device *pdev) if (info->config) { ret = info->config(fsm); if (ret) - return ret; + goto err_clk_unprepare; } else { ret = stfsm_prepare_rwe_seqs_default(fsm); if (ret) - return ret; + goto err_clk_unprepare; } fsm->mtd.name = info->name; @@ -2124,6 +2126,10 @@ static int stfsm_probe(struct platform_device *pdev) fsm->mtd.erasesize, (fsm->mtd.erasesize >> 10)); return mtd_device_register(&fsm->mtd, NULL, 0); + +err_clk_unprepare: + clk_disable_unprepare(fsm->clk); + return ret; } static int stfsm_remove(struct platform_device *pdev) @@ -2147,9 +2153,7 @@ static int stfsmfsm_resume(struct device *dev) { struct stfsm *fsm = dev_get_drvdata(dev); - clk_prepare_enable(fsm->clk); - - return 0; + return clk_prepare_enable(fsm->clk); } #endif |