diff options
Diffstat (limited to 'drivers/cpufreq/sun50i-cpufreq-nvmem.c')
| -rw-r--r-- | drivers/cpufreq/sun50i-cpufreq-nvmem.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c index 47d6840b3489..744312a44279 100644 --- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c +++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c @@ -194,7 +194,9 @@ static int sun50i_cpufreq_get_efuse(void) struct nvmem_cell *speedbin_nvmem; const struct of_device_id *match; struct device *cpu_dev; - u32 *speedbin; + void *speedbin_ptr; + u32 speedbin = 0; + size_t len; int ret; cpu_dev = get_cpu_device(0); @@ -217,14 +219,18 @@ static int sun50i_cpufreq_get_efuse(void) return dev_err_probe(cpu_dev, PTR_ERR(speedbin_nvmem), "Could not get nvmem cell\n"); - speedbin = nvmem_cell_read(speedbin_nvmem, NULL); + speedbin_ptr = nvmem_cell_read(speedbin_nvmem, &len); nvmem_cell_put(speedbin_nvmem); - if (IS_ERR(speedbin)) - return PTR_ERR(speedbin); + if (IS_ERR(speedbin_ptr)) + return PTR_ERR(speedbin_ptr); - ret = opp_data->efuse_xlate(*speedbin); + if (len <= 4) + memcpy(&speedbin, speedbin_ptr, len); + speedbin = le32_to_cpu(speedbin); - kfree(speedbin); + ret = opp_data->efuse_xlate(speedbin); + + kfree(speedbin_ptr); return ret; }; |