diff options
Diffstat (limited to 'target/linux/generic/pending-4.4/042-0001-mtd-bcm47xxsflash-use-ioremap_cache-instead-of-KSEG0.patch')
| -rw-r--r-- | target/linux/generic/pending-4.4/042-0001-mtd-bcm47xxsflash-use-ioremap_cache-instead-of-KSEG0.patch | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/target/linux/generic/pending-4.4/042-0001-mtd-bcm47xxsflash-use-ioremap_cache-instead-of-KSEG0.patch b/target/linux/generic/pending-4.4/042-0001-mtd-bcm47xxsflash-use-ioremap_cache-instead-of-KSEG0.patch deleted file mode 100644 index 89f1e5eccf..0000000000 --- a/target/linux/generic/pending-4.4/042-0001-mtd-bcm47xxsflash-use-ioremap_cache-instead-of-KSEG0.patch +++ /dev/null @@ -1,138 +0,0 @@ -From 5651d6aaf489d1db48c253cf884b40214e91c2c5 Mon Sep 17 00:00:00 2001 -From: Brian Norris <computersforpeace@gmail.com> -Date: Fri, 26 Feb 2016 11:50:28 +0100 -Subject: [PATCH] mtd: bcm47xxsflash: use ioremap_cache() instead of - KSEG0ADDR() -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Using KSEG0ADDR makes code highly MIPS dependent and not portable. -Thanks to the fix a68f376 ("MIPS: io.h: Define `ioremap_cache'") we can -use ioremap_cache which is generic and supported on MIPS as well now. - -KSEG0ADDR was translating 0x1c000000 into 0x9c000000. With ioremap_cache -we use MIPS's __ioremap (and then remap_area_pages). This results in -different address (e.g. 0xc0080000) but it still should be cached as -expected and it was successfully tested with BCM47186B0. - -Other than that drivers/bcma/driver_chipcommon_sflash.c nicely setups a -struct resource for access window, but we wren't using it. Use it now -and drop duplicated info. - -Signed-off-by: Brian Norris <computersforpeace@gmail.com> -Signed-off-by: Rafał Miłecki <zajec5@gmail.com> ---- - ---- a/drivers/bcma/driver_chipcommon_sflash.c -+++ b/drivers/bcma/driver_chipcommon_sflash.c -@@ -146,7 +146,6 @@ int bcma_sflash_init(struct bcma_drv_cc - return -ENOTSUPP; - } - -- sflash->window = BCMA_SOC_FLASH2; - sflash->blocksize = e->blocksize; - sflash->numblocks = e->numblocks; - sflash->size = sflash->blocksize * sflash->numblocks; ---- a/drivers/mtd/devices/bcm47xxsflash.c -+++ b/drivers/mtd/devices/bcm47xxsflash.c -@@ -2,6 +2,7 @@ - #include <linux/module.h> - #include <linux/slab.h> - #include <linux/delay.h> -+#include <linux/ioport.h> - #include <linux/mtd/mtd.h> - #include <linux/platform_device.h> - #include <linux/bcma/bcma.h> -@@ -109,8 +110,7 @@ static int bcm47xxsflash_read(struct mtd - if ((from + len) > mtd->size) - return -EINVAL; - -- memcpy_fromio(buf, (void __iomem *)KSEG0ADDR(b47s->window + from), -- len); -+ memcpy_fromio(buf, b47s->window + from, len); - *retlen = len; - - return len; -@@ -275,15 +275,33 @@ static void bcm47xxsflash_bcma_cc_write( - - static int bcm47xxsflash_bcma_probe(struct platform_device *pdev) - { -- struct bcma_sflash *sflash = dev_get_platdata(&pdev->dev); -+ struct device *dev = &pdev->dev; -+ struct bcma_sflash *sflash = dev_get_platdata(dev); - struct bcm47xxsflash *b47s; -+ struct resource *res; - int err; - -- b47s = devm_kzalloc(&pdev->dev, sizeof(*b47s), GFP_KERNEL); -+ b47s = devm_kzalloc(dev, sizeof(*b47s), GFP_KERNEL); - if (!b47s) - return -ENOMEM; - sflash->priv = b47s; - -+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ if (!res) { -+ dev_err(dev, "invalid resource\n"); -+ return -EINVAL; -+ } -+ if (!devm_request_mem_region(dev, res->start, resource_size(res), -+ res->name)) { -+ dev_err(dev, "can't request region for resource %pR\n", res); -+ return -EBUSY; -+ } -+ b47s->window = ioremap_cache(res->start, resource_size(res)); -+ if (!b47s->window) { -+ dev_err(dev, "ioremap failed for resource %pR\n", res); -+ return -ENOMEM; -+ } -+ - b47s->bcma_cc = container_of(sflash, struct bcma_drv_cc, sflash); - b47s->cc_read = bcm47xxsflash_bcma_cc_read; - b47s->cc_write = bcm47xxsflash_bcma_cc_write; -@@ -297,7 +315,6 @@ static int bcm47xxsflash_bcma_probe(stru - break; - } - -- b47s->window = sflash->window; - b47s->blocksize = sflash->blocksize; - b47s->numblocks = sflash->numblocks; - b47s->size = sflash->size; -@@ -306,6 +323,7 @@ static int bcm47xxsflash_bcma_probe(stru - err = mtd_device_parse_register(&b47s->mtd, probes, NULL, NULL, 0); - if (err) { - pr_err("Failed to register MTD device: %d\n", err); -+ iounmap(b47s->window); - return err; - } - -@@ -321,6 +339,7 @@ static int bcm47xxsflash_bcma_remove(str - struct bcm47xxsflash *b47s = sflash->priv; - - mtd_device_unregister(&b47s->mtd); -+ iounmap(b47s->window); - - return 0; - } ---- a/drivers/mtd/devices/bcm47xxsflash.h -+++ b/drivers/mtd/devices/bcm47xxsflash.h -@@ -65,7 +65,8 @@ struct bcm47xxsflash { - - enum bcm47xxsflash_type type; - -- u32 window; -+ void __iomem *window; -+ - u32 blocksize; - u16 numblocks; - u32 size; ---- a/include/linux/bcma/bcma_driver_chipcommon.h -+++ b/include/linux/bcma/bcma_driver_chipcommon.h -@@ -588,7 +588,6 @@ struct bcma_pflash { - #ifdef CONFIG_BCMA_SFLASH - struct bcma_sflash { - bool present; -- u32 window; - u32 blocksize; - u16 numblocks; - u32 size; |