A call to request_mem_region() has been introduced in the omap-gpio driver recently (commit 96751fcbe5438e95514b025e9cee7a6d38038f40, "gpio/omap: Use devm_ API and add request_mem_region"). This change prevented the Amstrad Delta NAND driver, which was doing the same in order to take control over OMAP MPU I/O lines that the NAND device hangs off, from loading successfully.
There is another driver, omap-keypad, which also manipulates OMAP MPUIO registers, but has never been calling request_mem_region() on startup, so it's not affected by the change in the gpio-omap and works correctly. Drop request_mem_region() call and related bits from ams-delta NAND driver. Created and tested against linux-3.4-rc3. Signed-off-by: Janusz Krzysztofik <[email protected]> --- drivers/mtd/nand/ams-delta.c | 12 +----------- 1 files changed, 1 insertions(+), 11 deletions(-) diff --git a/drivers/mtd/nand/ams-delta.c b/drivers/mtd/nand/ams-delta.c index 7341695..af76da3 100644 --- a/drivers/mtd/nand/ams-delta.c +++ b/drivers/mtd/nand/ams-delta.c @@ -212,18 +212,11 @@ static int __devinit ams_delta_init(struct platform_device *pdev) /* Link the private data with the MTD structure */ ams_delta_mtd->priv = this; - if (!request_mem_region(res->start, resource_size(res), - dev_name(&pdev->dev))) { - dev_err(&pdev->dev, "request_mem_region failed\n"); - err = -EBUSY; - goto out_free; - } - io_base = ioremap(res->start, resource_size(res)); if (io_base == NULL) { dev_err(&pdev->dev, "ioremap failed\n"); err = -EIO; - goto out_release_io; + goto out_free; } this->priv = io_base; @@ -271,8 +264,6 @@ out_gpio: platform_set_drvdata(pdev, NULL); gpio_free(AMS_DELTA_GPIO_PIN_NAND_RB); iounmap(io_base); -out_release_io: - release_mem_region(res->start, resource_size(res)); out_free: kfree(ams_delta_mtd); out: @@ -293,7 +284,6 @@ static int __devexit ams_delta_cleanup(struct platform_device *pdev) gpio_free_array(_mandatory_gpio, ARRAY_SIZE(_mandatory_gpio)); gpio_free(AMS_DELTA_GPIO_PIN_NAND_RB); iounmap(io_base); - release_mem_region(res->start, resource_size(res)); /* Free the MTD device structure */ kfree(ams_delta_mtd); -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
