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authorDavid Brownell <david-b@pacbell.net>2007-07-17 07:04:04 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-17 13:23:04 -0400
commit4917d927809918f0070bd1077b41e3daf78643b2 (patch)
tree207df3ec533d72933170a69962ec44b864892f2c
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>
-rw-r--r--drivers/spi/spidev.c6
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,
181 } 181 }
182 if (u_tmp->tx_buf) { 182 if (u_tmp->tx_buf) {
183 k_tmp->tx_buf = buf; 183 k_tmp->tx_buf = buf;
184 if (copy_from_user(buf, (const u8 __user *)u_tmp->tx_buf, 184 if (copy_from_user(buf, (const u8 __user *)
185 (ptrdiff_t) u_tmp->tx_buf,
185 u_tmp->len)) 186 u_tmp->len))
186 goto done; 187 goto done;
187 } 188 }
@@ -213,7 +214,8 @@ static int spidev_message(struct spidev_data *spidev,
213 buf = spidev->buffer; 214 buf = spidev->buffer;
214 for (n = n_xfers, u_tmp = u_xfers; n; n--, u_tmp++) { 215 for (n = n_xfers, u_tmp = u_xfers; n; n--, u_tmp++) {
215 if (u_tmp->rx_buf) { 216 if (u_tmp->rx_buf) {
216 if (__copy_to_user((u8 __user *)u_tmp->rx_buf, buf, 217 if (__copy_to_user((u8 __user *)
218 (ptrdiff_t) u_tmp->rx_buf, buf,
217 u_tmp->len)) { 219 u_tmp->len)) {
218 status = -EFAULT; 220 status = -EFAULT;
219 goto done; 221 goto done;