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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>
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parent
ad241528c4
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4917d92780
1 changed files with 4 additions and 2 deletions
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@ -181,7 +181,8 @@ static int spidev_message(struct spidev_data *spidev,
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}
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if (u_tmp->tx_buf) {
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k_tmp->tx_buf = buf;
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if (copy_from_user(buf, (const u8 __user *)u_tmp->tx_buf,
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if (copy_from_user(buf, (const u8 __user *)
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(ptrdiff_t) u_tmp->tx_buf,
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u_tmp->len))
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goto done;
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}
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@ -213,7 +214,8 @@ static int spidev_message(struct spidev_data *spidev,
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buf = spidev->buffer;
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for (n = n_xfers, u_tmp = u_xfers; n; n--, u_tmp++) {
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if (u_tmp->rx_buf) {
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if (__copy_to_user((u8 __user *)u_tmp->rx_buf, buf,
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if (__copy_to_user((u8 __user *)
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(ptrdiff_t) u_tmp->rx_buf, buf,
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u_tmp->len)) {
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status = -EFAULT;
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goto done;
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