Add the nvram_size() function to those PowerPC platforms that don't already have one: CHRP and PowerMac. This means that the ppc_md.nvram_size() function can be used to implement arch_nvram_ops.get_size() Since we are addressing inconsistencies here, also rename chrp_nvram_read and chrp_nvram_write, which break the naming convention used across PowerPC platforms for NVRAM accessor functions. Signed-off-by: Finn Thain --- arch/powerpc/platforms/chrp/nvram.c | 14 ++++++++++---- arch/powerpc/platforms/powermac/nvram.c | 9 +++++++++ 2 files changed, 19 insertions(+), 4 deletions(-) Index: linux/arch/powerpc/platforms/chrp/nvram.c =================================================================== --- linux.orig/arch/powerpc/platforms/chrp/nvram.c 2015-07-12 20:24:53.000000000 +1000 +++ linux/arch/powerpc/platforms/chrp/nvram.c 2015-07-12 20:25:09.000000000 +1000 @@ -23,7 +23,7 @@ static unsigned int nvram_size; static unsigned char nvram_buf[4]; static DEFINE_SPINLOCK(nvram_lock); -static unsigned char chrp_nvram_read(int addr) +static unsigned char chrp_nvram_read_byte(int addr) { unsigned int done; unsigned long flags; @@ -45,7 +45,7 @@ static unsigned char chrp_nvram_read(int return ret; } -static void chrp_nvram_write(int addr, unsigned char val) +static void chrp_nvram_write_byte(int addr, unsigned char val) { unsigned int done; unsigned long flags; @@ -63,6 +63,11 @@ static void chrp_nvram_write(int addr, u spin_unlock_irqrestore(&nvram_lock, flags); } +static ssize_t chrp_nvram_size(void) +{ + return nvram_size; +} + void __init chrp_nvram_init(void) { struct device_node *nvram; @@ -84,8 +89,9 @@ void __init chrp_nvram_init(void) printk(KERN_INFO "CHRP nvram contains %u bytes\n", nvram_size); of_node_put(nvram); - ppc_md.nvram_read_val = chrp_nvram_read; - ppc_md.nvram_write_val = chrp_nvram_write; + ppc_md.nvram_read_val = chrp_nvram_read_byte; + ppc_md.nvram_write_val = chrp_nvram_write_byte; + ppc_md.nvram_size = chrp_nvram_size; return; } Index: linux/arch/powerpc/platforms/powermac/nvram.c =================================================================== --- linux.orig/arch/powerpc/platforms/powermac/nvram.c 2015-07-12 20:24:53.000000000 +1000 +++ linux/arch/powerpc/platforms/powermac/nvram.c 2015-07-12 20:25:09.000000000 +1000 @@ -147,6 +147,11 @@ static ssize_t core99_nvram_size(void) static volatile unsigned char __iomem *nvram_addr; static int nvram_mult; +static ssize_t ppc32_nvram_size(void) +{ + return NVRAM_SIZE; +} + static unsigned char direct_nvram_read_byte(int addr) { return in_8(&nvram_data[(addr & (NVRAM_SIZE - 1)) * nvram_mult]); @@ -590,21 +595,25 @@ int __init pmac_nvram_init(void) nvram_mult = 1; ppc_md.nvram_read_val = direct_nvram_read_byte; ppc_md.nvram_write_val = direct_nvram_write_byte; + ppc_md.nvram_size = ppc32_nvram_size; } else if (nvram_naddrs == 1) { nvram_data = ioremap(r1.start, s1); nvram_mult = (s1 + NVRAM_SIZE - 1) / NVRAM_SIZE; ppc_md.nvram_read_val = direct_nvram_read_byte; ppc_md.nvram_write_val = direct_nvram_write_byte; + ppc_md.nvram_size = ppc32_nvram_size; } else if (nvram_naddrs == 2) { nvram_addr = ioremap(r1.start, s1); nvram_data = ioremap(r2.start, s2); ppc_md.nvram_read_val = indirect_nvram_read_byte; ppc_md.nvram_write_val = indirect_nvram_write_byte; + ppc_md.nvram_size = ppc32_nvram_size; } else if (nvram_naddrs == 0 && sys_ctrler == SYS_CTRLER_PMU) { #ifdef CONFIG_ADB_PMU nvram_naddrs = -1; ppc_md.nvram_read_val = pmu_nvram_read_byte; ppc_md.nvram_write_val = pmu_nvram_write_byte; + ppc_md.nvram_size = ppc32_nvram_size; #endif /* CONFIG_ADB_PMU */ } else { printk(KERN_ERR "Incompatible type of NVRAM\n");