Implement arch_nvram_ops for PPC32 and make use of it in the generic_nvram misc device module so that the nvram_* function exports can be removed. Signed-off-by: Finn Thain --- arch/powerpc/include/asm/nvram.h | 3 --- arch/powerpc/kernel/setup_32.c | 10 +++++++--- drivers/char/generic_nvram.c | 24 ++++++++++++------------ 3 files changed, 19 insertions(+), 18 deletions(-) Index: linux/arch/powerpc/include/asm/nvram.h =================================================================== --- linux.orig/arch/powerpc/include/asm/nvram.h 2015-08-23 20:41:07.000000000 +1000 +++ linux/arch/powerpc/include/asm/nvram.h 2015-08-23 20:41:10.000000000 +1000 @@ -98,7 +98,4 @@ extern int nvram_write_os_partition(stru unsigned int err_type, unsigned int error_log_cnt); -/* Determine NVRAM size */ -extern ssize_t nvram_get_size(void); - #endif /* _ASM_POWERPC_NVRAM_H */ Index: linux/arch/powerpc/kernel/setup_32.c =================================================================== --- linux.orig/arch/powerpc/kernel/setup_32.c 2015-08-23 20:41:07.000000000 +1000 +++ linux/arch/powerpc/kernel/setup_32.c 2015-08-23 20:41:10.000000000 +1000 @@ -186,13 +186,12 @@ void nvram_write_byte(unsigned char val, } EXPORT_SYMBOL(nvram_write_byte); -ssize_t nvram_get_size(void) +static ssize_t ppc_nvram_get_size(void) { if (ppc_md.nvram_size) return ppc_md.nvram_size(); - return -1; + return -ENODEV; } -EXPORT_SYMBOL(nvram_get_size); void nvram_sync(void) { @@ -201,6 +200,11 @@ void nvram_sync(void) } EXPORT_SYMBOL(nvram_sync); +const struct nvram_ops arch_nvram_ops = { + .get_size = ppc_nvram_get_size, +}; +EXPORT_SYMBOL(arch_nvram_ops); + #endif /* CONFIG_NVRAM */ int __init ppc_init(void) Index: linux/drivers/char/generic_nvram.c =================================================================== --- linux.orig/drivers/char/generic_nvram.c 2015-08-23 20:41:07.000000000 +1000 +++ linux/drivers/char/generic_nvram.c 2015-08-23 20:41:10.000000000 +1000 @@ -27,8 +27,6 @@ #include #endif -#define NVRAM_SIZE 8192 - static DEFINE_MUTEX(nvram_mutex); static ssize_t nvram_len; @@ -149,20 +147,22 @@ static struct miscdevice nvram_dev = { int __init nvram_init(void) { - int ret = 0; + int ret; - printk(KERN_INFO "Generic non-volatile memory driver v%s\n", - NVRAM_VERSION); - ret = misc_register(&nvram_dev); - if (ret != 0) - goto out; + if (arch_nvram_ops.get_size == NULL) + return -ENODEV; - nvram_len = nvram_get_size(); + nvram_len = arch_nvram_ops.get_size(); if (nvram_len < 0) - nvram_len = NVRAM_SIZE; + return nvram_len; -out: - return ret; + ret = misc_register(&nvram_dev); + if (ret) + return ret; + + pr_info("Generic non-volatile memory driver v%s\n", NVRAM_VERSION); + + return 0; } void __exit nvram_cleanup(void) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/