From: Thomas Weißschuh Date: Fri, 5 Jul 2024 07:48:48 +0000 (+0100) Subject: nvmem: core: drop unnecessary range checks in sysfs callbacks X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=588773802c386d38f9c4e91acd47369e89d95a30;p=users%2Fjedix%2Flinux-maple.git nvmem: core: drop unnecessary range checks in sysfs callbacks The same checks have already been done in sysfs_kf_bin_write() and sysfs_kf_bin_read() just before the callbacks are invoked. Signed-off-by: Thomas Weißschuh Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20240705074852.423202-12-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 015e6b9e0b60d..ec31c1fe9a99d 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -203,19 +203,12 @@ static ssize_t bin_attr_nvmem_read(struct file *filp, struct kobject *kobj, dev = kobj_to_dev(kobj); nvmem = to_nvmem_device(dev); - /* Stop the user from reading */ - if (pos >= nvmem->size) - return 0; - if (!IS_ALIGNED(pos, nvmem->stride)) return -EINVAL; if (count < nvmem->word_size) return -EINVAL; - if (pos + count > nvmem->size) - count = nvmem->size - pos; - count = round_down(count, nvmem->word_size); if (!nvmem->reg_read) @@ -243,19 +236,12 @@ static ssize_t bin_attr_nvmem_write(struct file *filp, struct kobject *kobj, dev = kobj_to_dev(kobj); nvmem = to_nvmem_device(dev); - /* Stop the user from writing */ - if (pos >= nvmem->size) - return -EFBIG; - if (!IS_ALIGNED(pos, nvmem->stride)) return -EINVAL; if (count < nvmem->word_size) return -EINVAL; - if (pos + count > nvmem->size) - count = nvmem->size - pos; - count = round_down(count, nvmem->word_size); if (!nvmem->reg_write)