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authorSeungwon Jeon <tgih.jun@samsung.com>2012-11-28 14:26:03 +0400
committerChris Ball <cjb@laptop.org>2012-12-06 22:55:10 +0400
commit780f22af85991be4f7c51c512726eee931707fff (patch)
tree14a8eaa37d105db14909b2de69b9ceb981acb18e /drivers/mmc/host/dw_mmc.c
parent047a9ce790077193e43acccedba0e2294cf4c89d (diff)
downloadlinux-780f22af85991be4f7c51c512726eee931707fff.tar.xz
mmc: dw_mmc: use devres functions in dw_mmc
Use managed device resource functions for easy handling. This makes driver simpler in the routine of error and exit. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Acked-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/dw_mmc.c')
-rw-r--r--drivers/mmc/host/dw_mmc.c43
1 files changed, 14 insertions, 29 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 73420296b268..6785d62ef047 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1914,7 +1914,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
#endif /* CONFIG_MMC_DW_IDMAC */
}
- host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
+ host->vmmc = devm_regulator_get(mmc_dev(mmc), "vmmc");
if (IS_ERR(host->vmmc)) {
pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
host->vmmc = NULL;
@@ -1963,7 +1963,7 @@ static void dw_mci_cleanup_slot(struct dw_mci_slot *slot, unsigned int id)
static void dw_mci_init_dma(struct dw_mci *host)
{
/* Alloc memory for sg translation */
- host->sg_cpu = dma_alloc_coherent(host->dev, PAGE_SIZE,
+ host->sg_cpu = dmam_alloc_coherent(host->dev, PAGE_SIZE,
&host->sg_dma, GFP_KERNEL);
if (!host->sg_cpu) {
dev_err(host->dev, "%s: could not alloc DMA memory\n",
@@ -2112,26 +2112,24 @@ int dw_mci_probe(struct dw_mci *host)
return -ENODEV;
}
- host->biu_clk = clk_get(host->dev, "biu");
+ host->biu_clk = devm_clk_get(host->dev, "biu");
if (IS_ERR(host->biu_clk)) {
dev_dbg(host->dev, "biu clock not available\n");
} else {
ret = clk_prepare_enable(host->biu_clk);
if (ret) {
dev_err(host->dev, "failed to enable biu clock\n");
- clk_put(host->biu_clk);
return ret;
}
}
- host->ciu_clk = clk_get(host->dev, "ciu");
+ host->ciu_clk = devm_clk_get(host->dev, "ciu");
if (IS_ERR(host->ciu_clk)) {
dev_dbg(host->dev, "ciu clock not available\n");
} else {
ret = clk_prepare_enable(host->ciu_clk);
if (ret) {
dev_err(host->dev, "failed to enable ciu clock\n");
- clk_put(host->ciu_clk);
goto err_clk_biu;
}
}
@@ -2233,7 +2231,8 @@ int dw_mci_probe(struct dw_mci *host)
if (!host->card_workqueue)
goto err_dmaunmap;
INIT_WORK(&host->card_work, dw_mci_work_routine_card);
- ret = request_irq(host->irq, dw_mci_interrupt, host->irq_flags, "dw-mci", host);
+ ret = devm_request_irq(host->dev, host->irq, dw_mci_interrupt,
+ host->irq_flags, "dw-mci", host);
if (ret)
goto err_workqueue;
@@ -2271,7 +2270,7 @@ int dw_mci_probe(struct dw_mci *host)
} else {
dev_dbg(host->dev, "attempted to initialize %d slots, "
"but failed on all\n", host->num_slots);
- goto err_init_slot;
+ goto err_workqueue;
}
/*
@@ -2291,33 +2290,24 @@ int dw_mci_probe(struct dw_mci *host)
return 0;
-err_init_slot:
- free_irq(host->irq, host);
-
err_workqueue:
destroy_workqueue(host->card_workqueue);
err_dmaunmap:
if (host->use_dma && host->dma_ops->exit)
host->dma_ops->exit(host);
- dma_free_coherent(host->dev, PAGE_SIZE,
- host->sg_cpu, host->sg_dma);
- if (host->vmmc) {
+ if (host->vmmc)
regulator_disable(host->vmmc);
- regulator_put(host->vmmc);
- }
err_clk_ciu:
- if (!IS_ERR(host->ciu_clk)) {
+ if (!IS_ERR(host->ciu_clk))
clk_disable_unprepare(host->ciu_clk);
- clk_put(host->ciu_clk);
- }
+
err_clk_biu:
- if (!IS_ERR(host->biu_clk)) {
+ if (!IS_ERR(host->biu_clk))
clk_disable_unprepare(host->biu_clk);
- clk_put(host->biu_clk);
- }
+
return ret;
}
EXPORT_SYMBOL(dw_mci_probe);
@@ -2339,24 +2329,19 @@ void dw_mci_remove(struct dw_mci *host)
mci_writel(host, CLKENA, 0);
mci_writel(host, CLKSRC, 0);
- free_irq(host->irq, host);
destroy_workqueue(host->card_workqueue);
- dma_free_coherent(host->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
if (host->use_dma && host->dma_ops->exit)
host->dma_ops->exit(host);
- if (host->vmmc) {
+ if (host->vmmc)
regulator_disable(host->vmmc);
- regulator_put(host->vmmc);
- }
if (!IS_ERR(host->ciu_clk))
clk_disable_unprepare(host->ciu_clk);
+
if (!IS_ERR(host->biu_clk))
clk_disable_unprepare(host->biu_clk);
- clk_put(host->ciu_clk);
- clk_put(host->biu_clk);
}
EXPORT_SYMBOL(dw_mci_remove);