diff options
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/file.c | 27 |
1 files changed, 7 insertions, 20 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c index 02f7b113a31..3c7c3f82d84 100644 --- a/arch/powerpc/platforms/cell/spufs/file.c +++ b/arch/powerpc/platforms/cell/spufs/file.c @@ -219,24 +219,17 @@ spufs_mem_write(struct file *file, const char __user *buffer, loff_t pos = *ppos; int ret; - if (pos < 0) - return -EINVAL; if (pos > LS_SIZE) return -EFBIG; - if (size > LS_SIZE - pos) - size = LS_SIZE - pos; ret = spu_acquire(ctx); if (ret) return ret; local_store = ctx->ops->get_ls(ctx); - ret = copy_from_user(local_store + pos, buffer, size); + size = simple_write_to_buffer(local_store, LS_SIZE, ppos, buffer, size); spu_release(ctx); - if (ret) - return -EFAULT; - *ppos = pos + size; return size; } @@ -574,18 +567,15 @@ spufs_regs_write(struct file *file, const char __user *buffer, if (*pos >= sizeof(lscsa->gprs)) return -EFBIG; - size = min_t(ssize_t, sizeof(lscsa->gprs) - *pos, size); - *pos += size; - ret = spu_acquire_saved(ctx); if (ret) return ret; - ret = copy_from_user((char *)lscsa->gprs + *pos - size, - buffer, size) ? -EFAULT : size; + size = simple_write_to_buffer(lscsa->gprs, sizeof(lscsa->gprs), pos, + buffer, size); spu_release_saved(ctx); - return ret; + return size; } static const struct file_operations spufs_regs_fops = { @@ -630,18 +620,15 @@ spufs_fpcr_write(struct file *file, const char __user * buffer, if (*pos >= sizeof(lscsa->fpcr)) return -EFBIG; - size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); - ret = spu_acquire_saved(ctx); if (ret) return ret; - *pos += size; - ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, - buffer, size) ? -EFAULT : size; + size = simple_write_to_buffer(&lscsa->fpcr, sizeof(lscsa->fpcr), pos, + buffer, size); spu_release_saved(ctx); - return ret; + return size; } static const struct file_operations spufs_fpcr_fops = { |