path: root/drivers/spi/spidev.c
diff options
authorDavid Brownell <david-b@pacbell.net>2007-07-17 04:04:04 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-17 10:23:04 -0700
commit4917d927809918f0070bd1077b41e3daf78643b2 (patch)
tree207df3ec533d72933170a69962ec44b864892f2c /drivers/spi/spidev.c
parentad241528c4919505afccb022acbab3eeb0db4d80 (diff)
spidev compiler warning gone
Get rid of annoying GCC warning on 32-bit platforms. drivers/spi/spidev.c: In function 'spidev_message': drivers/spi/spidev.c:184: warning: cast to pointer from integer of different size drivers/spi/spidev.c:216: warning: cast to pointer from integer of different size The trick is to add an extra cast using "ptrdiff_t" to convert the u64 to the correct size integer, and only then casting it into a "void *" pointer. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/spi/spidev.c')
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index d04242aee40d..38b60ad0eda0 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -181,7 +181,8 @@ static int spidev_message(struct spidev_data *spidev,
if (u_tmp->tx_buf) {
k_tmp->tx_buf = buf;
- if (copy_from_user(buf, (const u8 __user *)u_tmp->tx_buf,
+ if (copy_from_user(buf, (const u8 __user *)
+ (ptrdiff_t) u_tmp->tx_buf,
goto done;
@@ -213,7 +214,8 @@ static int spidev_message(struct spidev_data *spidev,
buf = spidev->buffer;
for (n = n_xfers, u_tmp = u_xfers; n; n--, u_tmp++) {
if (u_tmp->rx_buf) {
- if (__copy_to_user((u8 __user *)u_tmp->rx_buf, buf,
+ if (__copy_to_user((u8 __user *)
+ (ptrdiff_t) u_tmp->rx_buf, buf,
u_tmp->len)) {
status = -EFAULT;
goto done;