pata_falcon: Avoid type warnings from sparse

The zero day bot reported some sparse complaints in pata_falcon.c. E.g.

drivers/ata/pata_falcon.c:58:41: warning: cast removes address space '__iomem' of expression
drivers/ata/pata_falcon.c:58:41: warning: incorrect type in argument 1 (different address spaces)
drivers/ata/pata_falcon.c:58:41:    expected unsigned short volatile [noderef] [usertype] __iomem *port
drivers/ata/pata_falcon.c:58:41:    got unsigned short [usertype] *

The same thing shows up in 8 places, all told. Avoid this by removing
unnecessary type casts.

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Michael Schmitz <schmitzmic@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Reported-by: kernel test robot <lkp@intel.com>
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Finn Thain <fthain@linux-m68k.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>

diff --git a/drivers/ata/pata_falcon.c b/drivers/ata/pata_falcon.c
index 121635aa8c00c10e8f5e42cc5855d173971cf4e7..823c88622e34a089e670a8bb9d7dc0838ced78d5 100644 (file)
--- a/drivers/ata/pata_falcon.c
+++ b/drivers/ata/pata_falcon.c
@@ -55,14 +55,14 @@ static unsigned int pata_falcon_data_xfer(struct ata_queued_cmd *qc,
        /* Transfer multiple of 2 bytes */
        if (rw == READ) {
                if (swap)
-                       raw_insw_swapw((u16 *)data_addr, (u16 *)buf, words);
+                       raw_insw_swapw(data_addr, (u16 *)buf, words);
                else
-                       raw_insw((u16 *)data_addr, (u16 *)buf, words);
+                       raw_insw(data_addr, (u16 *)buf, words);
        } else {
                if (swap)
-                       raw_outsw_swapw((u16 *)data_addr, (u16 *)buf, words);
+                       raw_outsw_swapw(data_addr, (u16 *)buf, words);
                else
-                       raw_outsw((u16 *)data_addr, (u16 *)buf, words);
+                       raw_outsw(data_addr, (u16 *)buf, words);
        }
 
        /* Transfer trailing byte, if any. */
@@ -74,16 +74,16 @@ static unsigned int pata_falcon_data_xfer(struct ata_queued_cmd *qc,
 
                if (rw == READ) {
                        if (swap)
-                               raw_insw_swapw((u16 *)data_addr, (u16 *)pad, 1);
+                               raw_insw_swapw(data_addr, (u16 *)pad, 1);
                        else
-                               raw_insw((u16 *)data_addr, (u16 *)pad, 1);
+                               raw_insw(data_addr, (u16 *)pad, 1);
                        *buf = pad[0];
                } else {
                        pad[0] = *buf;
                        if (swap)
-                               raw_outsw_swapw((u16 *)data_addr, (u16 *)pad, 1);
+                               raw_outsw_swapw(data_addr, (u16 *)pad, 1);
                        else
-                               raw_outsw((u16 *)data_addr, (u16 *)pad, 1);
+                               raw_outsw(data_addr, (u16 *)pad, 1);
                }
                words++;
        }