From 1c48eee5b2bcfaf9815cc9a6f6664392d17164cb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Fri, 12 Mar 2021 18:07:57 +0100 Subject: kernel: backport Broadcom NVRAM driver cleanups MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Refactoring of bcm47xx_nvram driver. It's used by bcm47xx and bcm53xx. Signed-off-by: Rafał Miłecki --- ...m47xx_nvram-rename-finding-function-and-i.patch | 80 ++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 target/linux/generic/backport-5.4/831-v5.13-0001-firmware-bcm47xx_nvram-rename-finding-function-and-i.patch (limited to 'target/linux/generic/backport-5.4/831-v5.13-0001-firmware-bcm47xx_nvram-rename-finding-function-and-i.patch') diff --git a/target/linux/generic/backport-5.4/831-v5.13-0001-firmware-bcm47xx_nvram-rename-finding-function-and-i.patch b/target/linux/generic/backport-5.4/831-v5.13-0001-firmware-bcm47xx_nvram-rename-finding-function-and-i.patch new file mode 100644 index 0000000000..19938704b7 --- /dev/null +++ b/target/linux/generic/backport-5.4/831-v5.13-0001-firmware-bcm47xx_nvram-rename-finding-function-and-i.patch @@ -0,0 +1,80 @@ +From fb009cbdd0693bd633f11e99526617b3d392cfad Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Mon, 8 Mar 2021 10:03:16 +0100 +Subject: [PATCH] firmware: bcm47xx_nvram: rename finding function and its + variables +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +1. Use "bcm47xx_" function name prefix for consistency +2. It takes flash start as argument so s/iobase/flash_start/ +3. "off" was used for finding flash end so just call it "flash_size" + +Signed-off-by: Rafał Miłecki +Signed-off-by: Thomas Bogendoerfer +--- + drivers/firmware/broadcom/bcm47xx_nvram.c | 24 ++++++++++++----------- + 1 file changed, 13 insertions(+), 11 deletions(-) + +--- a/drivers/firmware/broadcom/bcm47xx_nvram.c ++++ b/drivers/firmware/broadcom/bcm47xx_nvram.c +@@ -48,11 +48,13 @@ static u32 find_nvram_size(void __iomem + return 0; + } + +-/* Probe for NVRAM header */ +-static int nvram_find_and_copy(void __iomem *iobase, u32 lim) ++/** ++ * bcm47xx_nvram_find_and_copy - find NVRAM on flash mapping & copy it ++ */ ++static int bcm47xx_nvram_find_and_copy(void __iomem *flash_start, size_t res_size) + { + struct nvram_header __iomem *header; +- u32 off; ++ size_t flash_size; + u32 size; + + if (nvram_len) { +@@ -61,25 +63,25 @@ static int nvram_find_and_copy(void __io + } + + /* TODO: when nvram is on nand flash check for bad blocks first. */ +- off = FLASH_MIN; +- while (off <= lim) { ++ flash_size = FLASH_MIN; ++ while (flash_size <= res_size) { + /* Windowed flash access */ +- size = find_nvram_size(iobase + off); ++ size = find_nvram_size(flash_start + flash_size); + if (size) { +- header = (struct nvram_header *)(iobase + off - size); ++ header = (struct nvram_header *)(flash_start + flash_size - size); + goto found; + } +- off <<= 1; ++ flash_size <<= 1; + } + + /* Try embedded NVRAM at 4 KB and 1 KB as last resorts */ +- header = (struct nvram_header *)(iobase + 4096); ++ header = (struct nvram_header *)(flash_start + 4096); + if (header->magic == NVRAM_MAGIC) { + size = NVRAM_SPACE; + goto found; + } + +- header = (struct nvram_header *)(iobase + 1024); ++ header = (struct nvram_header *)(flash_start + 1024); + if (header->magic == NVRAM_MAGIC) { + size = NVRAM_SPACE; + goto found; +@@ -124,7 +126,7 @@ int bcm47xx_nvram_init_from_mem(u32 base + if (!iobase) + return -ENOMEM; + +- err = nvram_find_and_copy(iobase, lim); ++ err = bcm47xx_nvram_find_and_copy(iobase, lim); + + iounmap(iobase); + -- cgit v1.2.3