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| author | Finn Thain <fthain@telegraphics.com.au> | 2019-01-15 15:18:56 +1100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-22 10:21:45 +0100 |
| commit | f9c3a570f5fc584f2ca2dd222d1b8c8537fc55f6 (patch) | |
| tree | 0bacf78e4973fea728c05a0c8b69e8afff1209e0 /include/linux/nvram.h | |
| parent | 066ac5c3c4bb467d6e8c7255e36c77060efe5ef7 (diff) | |
| download | lwn-f9c3a570f5fc584f2ca2dd222d1b8c8537fc55f6.tar.gz lwn-f9c3a570f5fc584f2ca2dd222d1b8c8537fc55f6.zip | |
powerpc: Enable HAVE_ARCH_NVRAM_OPS and disable GENERIC_NVRAM
Switch PPC32 kernels from the generic_nvram module to the nvram module.
Also fix a theoretical bug where CHRP omits the chrp_nvram_init() call
when CONFIG_NVRAM_MODULE=m.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/nvram.h')
| -rw-r--r-- | include/linux/nvram.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/nvram.h b/include/linux/nvram.h index 9e3a957c8f1f..d29d9c93a927 100644 --- a/include/linux/nvram.h +++ b/include/linux/nvram.h @@ -5,6 +5,10 @@ #include <linux/errno.h> #include <uapi/linux/nvram.h> +#ifdef CONFIG_PPC +#include <asm/machdep.h> +#endif + /** * struct nvram_ops - NVRAM functionality made available to drivers * @read: validate checksum (if any) then load a range of bytes from NVRAM @@ -42,6 +46,8 @@ extern const struct nvram_ops arch_nvram_ops; static inline ssize_t nvram_get_size(void) { #ifdef CONFIG_PPC + if (ppc_md.nvram_size) + return ppc_md.nvram_size(); #else if (arch_nvram_ops.get_size) return arch_nvram_ops.get_size(); @@ -52,6 +58,8 @@ static inline ssize_t nvram_get_size(void) static inline unsigned char nvram_read_byte(int addr) { #ifdef CONFIG_PPC + if (ppc_md.nvram_read_val) + return ppc_md.nvram_read_val(addr); #else if (arch_nvram_ops.read_byte) return arch_nvram_ops.read_byte(addr); @@ -62,6 +70,8 @@ static inline unsigned char nvram_read_byte(int addr) static inline void nvram_write_byte(unsigned char val, int addr) { #ifdef CONFIG_PPC + if (ppc_md.nvram_write_val) + ppc_md.nvram_write_val(addr, val); #else if (arch_nvram_ops.write_byte) arch_nvram_ops.write_byte(val, addr); @@ -98,15 +108,25 @@ static inline ssize_t nvram_write_bytes(char *buf, size_t count, loff_t *ppos) static inline ssize_t nvram_read(char *buf, size_t count, loff_t *ppos) { +#ifdef CONFIG_PPC + if (ppc_md.nvram_read) + return ppc_md.nvram_read(buf, count, ppos); +#else if (arch_nvram_ops.read) return arch_nvram_ops.read(buf, count, ppos); +#endif return nvram_read_bytes(buf, count, ppos); } static inline ssize_t nvram_write(char *buf, size_t count, loff_t *ppos) { +#ifdef CONFIG_PPC + if (ppc_md.nvram_write) + return ppc_md.nvram_write(buf, count, ppos); +#else if (arch_nvram_ops.write) return arch_nvram_ops.write(buf, count, ppos); +#endif return nvram_write_bytes(buf, count, ppos); } |