drivers/block: use memdup_user

[net-next-2.6.git] / drivers / block / cpqarray.c

diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index 28937b661564237b44092843050964a0f2f58ea9..9473215956f93c5a3ec086307461f2255945f6bb 100644 (file)
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -1255,17 +1255,11 @@ static int ida_ctlr_ioctl(ctlr_info_t *h, int dsk, ida_ioctl_t *io)
        /* Pre submit processing */
        switch(io->cmd) {
        case PASSTHRU_A:
-               p = kmalloc(io->sg[0].size, GFP_KERNEL);
-               if (!p) 
-               { 
-                       error = -ENOMEM; 
-                       cmd_free(h, c, 0); 
-                       return(error);
-               }
-               if (copy_from_user(p, io->sg[0].addr, io->sg[0].size)) {
-                       kfree(p);
-                       cmd_free(h, c, 0); 
-                       return -EFAULT;
+               p = memdup_user(io->sg[0].addr, io->sg[0].size);
+               if (IS_ERR(p)) {
+                       error = PTR_ERR(p);
+                       cmd_free(h, c, 0);
+                       return error;
                }
                c->req.hdr.blk = pci_map_single(h->pci_dev, &(io->c), 
                                sizeof(ida_ioctl_t), 
@@ -1296,18 +1290,12 @@ static int ida_ctlr_ioctl(ctlr_info_t *h, int dsk, ida_ioctl_t *io)
        case DIAG_PASS_THRU:
        case COLLECT_BUFFER:
        case WRITE_FLASH_ROM:
-               p = kmalloc(io->sg[0].size, GFP_KERNEL);
-               if (!p) 
-               { 
-                        error = -ENOMEM; 
-                        cmd_free(h, c, 0);
-                        return(error);
+               p = memdup_user(io->sg[0].addr, io->sg[0].size);
+               if (IS_ERR(p)) {
+                       error = PTR_ERR(p);
+                       cmd_free(h, c, 0);
+                       return error;
                 }
-               if (copy_from_user(p, io->sg[0].addr, io->sg[0].size)) {
-                       kfree(p);
-                        cmd_free(h, c, 0);
-                       return -EFAULT;
-               }
                c->req.sg[0].size = io->sg[0].size;
                c->req.sg[0].addr = pci_map_single(h->pci_dev, p, 
                        c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);