From: Nikita Yushchenko <nyushche...@dev.rtsoft.ru>
This avoids leak of IRQ mapping on error paths, and makes it possible
to use devm_request_irq() without facing unmap-while-handler-installed
issues.
Signed-off-by: Nikita Yushchenko <nyushche...@dev.rtsoft.ru>
---
drivers/i2c/busses/i2c-mpc.c | 12 ++++--------
drivers/i2c/busses/i2c-mv64xxx.c | 2 +-
drivers/i2c/busses/i2c-st.c | 6 +++---
drivers/i2c/busses/i2c-wmt.c | 6 +++---
4 files changed, 11 insertions(+), 15 deletions(-)
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index f539163..f8e45a6 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -647,9 +647,11 @@ static int fsl_i2c_probe(struct platform_device *op)
goto fail_map;
}
- i2c->irq = irq_of_parse_and_map(op->dev.of_node, 0);
+ i2c->irq = devm_irq_of_parse_and_map(&op->dev, op->dev.of_node, 0);
+ if (i2c->irq < 0)
+ return i2c->irq;
if (i2c->irq) { /* no i2c->irq implies polling */
- result = request_irq(i2c->irq, mpc_i2c_isr,
+ result = devm_request_irq(&op->dev, i2c->irq, mpc_i2c_isr,
IRQF_SHARED, "i2c-mpc", i2c);
if (result < 0) {
dev_err(i2c->dev, "failed to attach interrupt\n");
@@ -719,9 +721,7 @@ static int fsl_i2c_probe(struct platform_device *op)
fail_add:
if (i2c->clk_per)
clk_disable_unprepare(i2c->clk_per);
- free_irq(i2c->irq, i2c);
fail_request:
- irq_dispose_mapping(i2c->irq);
iounmap(i2c->base);
fail_map:
kfree(i2c);
@@ -737,10 +737,6 @@ static int fsl_i2c_remove(struct platform_device *op)
if (i2c->clk_per)
clk_disable_unprepare(i2c->clk_per);
- if (i2c->irq)
- free_irq(i2c->irq, i2c);
-
- irq_dispose_mapping(i2c->irq);
iounmap(i2c->base);
kfree(i2c);
return 0;
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index 540ea69..65f95d0 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -755,7 +755,7 @@ mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data,
rc = -EINVAL;
goto out;
}
- drv_data->irq = irq_of_parse_and_map(np, 0);
+ drv_data->irq = devm_irq_of_parse_and_map(dev, np, 0);
drv_data->rstc = devm_reset_control_get_optional(dev, NULL);
if (IS_ERR(drv_data->rstc)) {
diff --git a/drivers/i2c/busses/i2c-st.c b/drivers/i2c/busses/i2c-st.c
index 8720161..f2d0017 100644
--- a/drivers/i2c/busses/i2c-st.c
+++ b/drivers/i2c/busses/i2c-st.c
@@ -778,10 +778,10 @@ static int st_i2c_probe(struct platform_device *pdev)
if (IS_ERR(i2c_dev->base))
return PTR_ERR(i2c_dev->base);
- i2c_dev->irq = irq_of_parse_and_map(np, 0);
- if (!i2c_dev->irq) {
+ i2c_dev->irq = devm_irq_of_parse_and_map(&pdev->dev, np, 0);
+ if (i2c_dev->irq <= 0) {
dev_err(&pdev->dev, "IRQ missing or invalid\n");
- return -EINVAL;
+ return i2c_dev->irq ? i2c_dev->irq : -EINVAL;
}
i2c_dev->clk = of_clk_get_by_name(np, "ssc");
diff --git a/drivers/i2c/busses/i2c-wmt.c b/drivers/i2c/busses/i2c-wmt.c
index 2c8a3e4..6082b93 100644
--- a/drivers/i2c/busses/i2c-wmt.c
+++ b/drivers/i2c/busses/i2c-wmt.c
@@ -389,10 +389,10 @@ static int wmt_i2c_probe(struct platform_device *pdev)
if (IS_ERR(i2c_dev->base))
return PTR_ERR(i2c_dev->base);
- i2c_dev->irq = irq_of_parse_and_map(np, 0);
- if (!i2c_dev->irq) {
+ i2c_dev->irq = devm_irq_of_parse_and_map(&pdev->dev, np, 0);
+ if (i2c_dev->irq <= 0) {
dev_err(&pdev->dev, "irq missing or invalid\n");
- return -EINVAL;
+ return i2c_dev->irq ? i2c_dev->irq : -EINVAL;
}
i2c_dev->clk = of_clk_get(np, 0);
--
1.7.10.4
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