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| author | Michal Simek <michal.simek@xilinx.com> | 2015-04-13 16:34:21 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-04-28 14:26:21 +0200 |
| commit | 5c90c07b98c02198d9777a7c4f3047b0a94bf7ed (patch) | |
| tree | 8acd947d49a45f01888b9607787fde0816004b21 /drivers/tty/serial/uartlite.c | |
| parent | serial: core: Fix kernel-doc build warnings (diff) | |
| download | linux-5c90c07b98c02198d9777a7c4f3047b0a94bf7ed.tar.xz linux-5c90c07b98c02198d9777a7c4f3047b0a94bf7ed.zip | |
serial: xilinx: Use platform_get_irq to get irq description structure
For systems with CONFIG_SERIAL_OF_PLATFORM=y and device_type =
"serial"; property in DT of_serial.c driver maps and unmaps IRQ (because
driver probe fails). Then a driver is called but irq mapping is not
created that's why driver is failing again in again on request_irq().
Based on this use platform_get_irq() instead of platform_get_resource()
which is doing irq_desc allocation and driver itself can request IRQ.
Fix both xilinx serial drivers in the tree.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/uartlite.c')
| -rw-r--r-- | drivers/tty/serial/uartlite.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c index 708eead850b0..b1c6bd3d483f 100644 --- a/drivers/tty/serial/uartlite.c +++ b/drivers/tty/serial/uartlite.c @@ -632,7 +632,8 @@ MODULE_DEVICE_TABLE(of, ulite_of_match); static int ulite_probe(struct platform_device *pdev) { - struct resource *res, *res2; + struct resource *res; + int irq; int id = pdev->id; #ifdef CONFIG_OF const __be32 *prop; @@ -646,11 +647,11 @@ static int ulite_probe(struct platform_device *pdev) if (!res) return -ENODEV; - res2 = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!res2) - return -ENODEV; + irq = platform_get_irq(pdev, 0); + if (irq <= 0) + return -ENXIO; - return ulite_assign(&pdev->dev, id, res->start, res2->start); + return ulite_assign(&pdev->dev, id, res->start, irq); } static int ulite_remove(struct platform_device *pdev) |