mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 00:11:13 +00:00
67 lines
2.1 KiB
Diff
67 lines
2.1 KiB
Diff
From b085eb8eed7f2da7c76ec0cea3abd70953367093 Mon Sep 17 00:00:00 2001
|
|
From: Annaliese McDermond <nh6z@nh6z.net>
|
|
Date: Fri, 21 Jun 2019 03:52:49 -0700
|
|
Subject: [PATCH 696/773] i2c: bcm2835: Move IRQ request after clock code in
|
|
probe
|
|
|
|
Commit 4a5cfa39465cad25dd736d7ceba8a5d32eea4ecc upstream.
|
|
|
|
If any of the clock code in the probe fails and returns, the IRQ
|
|
will not be freed. Moving the IRQ request to last allows it to
|
|
be freed on any errors further up in the probe function. devm_
|
|
calls can apparently not be used because there are some potential
|
|
race conditions that will arise.
|
|
|
|
Fixes: bebff81fb8b9 ("i2c: bcm2835: Model Divider in CCF")
|
|
Signed-off-by: Annaliese McDermond <nh6z@nh6z.net>
|
|
Acked-by: Stefan Wahren <wahrenst@gmx.net>
|
|
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
|
|
---
|
|
drivers/i2c/busses/i2c-bcm2835.c | 28 ++++++++++++++--------------
|
|
1 file changed, 14 insertions(+), 14 deletions(-)
|
|
|
|
--- a/drivers/i2c/busses/i2c-bcm2835.c
|
|
+++ b/drivers/i2c/busses/i2c-bcm2835.c
|
|
@@ -521,20 +521,6 @@ static int bcm2835_i2c_probe(struct plat
|
|
if (IS_ERR(i2c_dev->regs))
|
|
return PTR_ERR(i2c_dev->regs);
|
|
|
|
- irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
|
- if (!irq) {
|
|
- dev_err(&pdev->dev, "No IRQ resource\n");
|
|
- return -ENODEV;
|
|
- }
|
|
- i2c_dev->irq = irq->start;
|
|
-
|
|
- ret = request_irq(i2c_dev->irq, bcm2835_i2c_isr, IRQF_SHARED,
|
|
- dev_name(&pdev->dev), i2c_dev);
|
|
- if (ret) {
|
|
- dev_err(&pdev->dev, "Could not request IRQ\n");
|
|
- return -ENODEV;
|
|
- }
|
|
-
|
|
mclk_name = of_clk_get_parent_name(pdev->dev.of_node, 0);
|
|
|
|
bus_clk = bcm2835_i2c_register_div(&pdev->dev, mclk_name, i2c_dev);
|
|
@@ -564,6 +550,20 @@ static int bcm2835_i2c_probe(struct plat
|
|
return ret;
|
|
}
|
|
|
|
+ irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
|
+ if (!irq) {
|
|
+ dev_err(&pdev->dev, "No IRQ resource\n");
|
|
+ return -ENODEV;
|
|
+ }
|
|
+ i2c_dev->irq = irq->start;
|
|
+
|
|
+ ret = request_irq(i2c_dev->irq, bcm2835_i2c_isr, IRQF_SHARED,
|
|
+ dev_name(&pdev->dev), i2c_dev);
|
|
+ if (ret) {
|
|
+ dev_err(&pdev->dev, "Could not request IRQ\n");
|
|
+ return -ENODEV;
|
|
+ }
|
|
+
|
|
adap = &i2c_dev->adapter;
|
|
i2c_set_adapdata(adap, i2c_dev);
|
|
adap->owner = THIS_MODULE;
|