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Message-Id: <1368687502-15551-1-git-send-email-prabhakar.csengg@gmail.com>
Date: Thu, 16 May 2013 12:28:22 +0530
From: Lad Prabhakar <prabhakar.csengg@...il.com>
To: Sekhar Nori <nsekhar@...com>,
DLOS <davinci-linux-open-source@...ux.davincidsp.com>,
LAK <linux-arm-kernel@...ts.infradead.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
"Lad, Prabhakar" <prabhakar.csengg@...il.com>
Subject: [PATCH] ARM: davinci: dma: Convert to devm_* api
From: Lad, Prabhakar <prabhakar.csengg@...il.com>
Use devm_ioremap_resource instead of reques_mem_region()/ioremap() and
devm_request_irq() instead of request_irq().
This ensures more consistent error values and simplifies error paths.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@...il.com>
---
NOte:- Boot tested on Logic-PD OMAP-L138 EVM
arch/arm/mach-davinci/dma.c | 63 ++++++++++++++++--------------------------
1 files changed, 24 insertions(+), 39 deletions(-)
diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c
index 45b7c71..aeda496 100644
--- a/arch/arm/mach-davinci/dma.c
+++ b/arch/arm/mach-davinci/dma.c
@@ -1402,7 +1402,6 @@ static int __init edma_probe(struct platform_device *pdev)
int irq[EDMA_MAX_CC] = {0, 0};
int err_irq[EDMA_MAX_CC] = {0, 0};
struct resource *r[EDMA_MAX_CC] = {NULL};
- resource_size_t len[EDMA_MAX_CC];
char res_name[10];
char irq_name[10];
@@ -1422,25 +1421,16 @@ static int __init edma_probe(struct platform_device *pdev)
found = 1;
}
- len[j] = resource_size(r[j]);
-
- r[j] = request_mem_region(r[j]->start, len[j],
- dev_name(&pdev->dev));
- if (!r[j]) {
- status = -EBUSY;
- goto fail1;
- }
-
- edmacc_regs_base[j] = ioremap(r[j]->start, len[j]);
- if (!edmacc_regs_base[j]) {
+ edmacc_regs_base[j] = devm_ioremap_resource(&pdev->dev, r[j]);
+ if (IS_ERR(edmacc_regs_base[j])) {
status = -EBUSY;
- goto fail1;
+ goto fail;
}
edma_cc[j] = kzalloc(sizeof(struct edma), GFP_KERNEL);
if (!edma_cc[j]) {
status = -ENOMEM;
- goto fail1;
+ goto fail;
}
edma_cc[j]->num_channels = min_t(unsigned, info[j]->n_channel,
@@ -1491,10 +1481,12 @@ static int __init edma_probe(struct platform_device *pdev)
sprintf(irq_name, "edma%d", j);
irq[j] = platform_get_irq_byname(pdev, irq_name);
edma_cc[j]->irq_res_start = irq[j];
- status = request_irq(irq[j], dma_irq_handler, 0, "edma",
- &pdev->dev);
+ status = devm_request_irq(&pdev->dev, irq[j],
+ dma_irq_handler, 0, "edma",
+ &pdev->dev);
if (status < 0) {
- dev_dbg(&pdev->dev, "request_irq %d failed --> %d\n",
+ dev_dbg(&pdev->dev,
+ "devm_request_irq %d failed --> %d\n",
irq[j], status);
goto fail;
}
@@ -1502,10 +1494,12 @@ static int __init edma_probe(struct platform_device *pdev)
sprintf(irq_name, "edma%d_err", j);
err_irq[j] = platform_get_irq_byname(pdev, irq_name);
edma_cc[j]->irq_res_end = err_irq[j];
- status = request_irq(err_irq[j], dma_ccerr_handler, 0,
- "edma_error", &pdev->dev);
+ status = devm_request_irq(&pdev->dev, err_irq[j],
+ dma_ccerr_handler, 0,
+ "edma_error", &pdev->dev);
if (status < 0) {
- dev_dbg(&pdev->dev, "request_irq %d failed --> %d\n",
+ dev_dbg(&pdev->dev,
+ "devm_request_irq %d failed --> %d\n",
err_irq[j], status);
goto fail;
}
@@ -1542,17 +1536,20 @@ static int __init edma_probe(struct platform_device *pdev)
}
if (tc_errs_handled) {
- status = request_irq(IRQ_TCERRINT0, dma_tc0err_handler, 0,
- "edma_tc0", &pdev->dev);
+ status = devm_request_irq(&pdev->dev, IRQ_TCERRINT0,
+ dma_tc0err_handler, 0,
+ "edma_tc0", &pdev->dev);
if (status < 0) {
- dev_dbg(&pdev->dev, "request_irq %d failed --> %d\n",
+ dev_dbg(&pdev->dev,
+ "devm_request_irq %d failed --> %d\n",
IRQ_TCERRINT0, status);
return status;
}
- status = request_irq(IRQ_TCERRINT, dma_tc1err_handler, 0,
- "edma_tc1", &pdev->dev);
+ status = devm_request_irq(&pdev->dev, IRQ_TCERRINT,
+ dma_tc1err_handler, 0,
+ "edma_tc1", &pdev->dev);
if (status < 0) {
- dev_dbg(&pdev->dev, "request_irq %d --> %d\n",
+ dev_dbg(&pdev->dev, "devm_request_irq %d --> %d\n",
IRQ_TCERRINT, status);
return status;
}
@@ -1561,20 +1558,8 @@ static int __init edma_probe(struct platform_device *pdev)
return 0;
fail:
- for (i = 0; i < EDMA_MAX_CC; i++) {
- if (err_irq[i])
- free_irq(err_irq[i], &pdev->dev);
- if (irq[i])
- free_irq(irq[i], &pdev->dev);
- }
-fail1:
- for (i = 0; i < EDMA_MAX_CC; i++) {
- if (r[i])
- release_mem_region(r[i]->start, len[i]);
- if (edmacc_regs_base[i])
- iounmap(edmacc_regs_base[i]);
+ for (i = 0; i < EDMA_MAX_CC; i++)
kfree(edma_cc[i]);
- }
return status;
}
--
1.7.4.1
--
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