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udc: lpc32xx: fix 64-bit compiler warning 

gcc points out a suspicious cast from a pointer to an 'int' when
compile-testing on 64-bit architectures.

drivers/usb/gadget/udc/lpc32xx_udc.c: In function ‘udc_pop_fifo’:
drivers/usb/gadget/udc/lpc32xx_udc.c:1156:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
drivers/usb/gadget/udc/lpc32xx_udc.c: In function ‘udc_stuff_fifo’:
drivers/usb/gadget/udc/lpc32xx_udc.c:1257:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

The code works find, but it's easy enough to change the cast to
a uintptr_t to shut up that warning.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20190918200201.2292008-1-arnd@arndb.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arnd Bergmann 2019-09-18 22:01:41 +02:00 committed by Greg Kroah-Hartman
parent cfbb8a84c2
commit 792e559e94
2 changed files with 3 additions and 3 deletions
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2
drivers/usb/gadget/udc/Kconfig
View File

@ -45,7 +45,7 @@ config USB_AT91
config USB_LPC32XX
tristate "LPC32XX USB Peripheral Controller"
depends on ARCH_LPC32XX
depends on ARCH_LPC32XX || COMPILE_TEST
depends on I2C
select USB_ISP1301
help

4
drivers/usb/gadget/udc/lpc32xx_udc.c
View File

@ -1151,7 +1151,7 @@ static void udc_pop_fifo(struct lpc32xx_udc *udc, u8 *data, u32 bytes)
u32 *p32, tmp, cbytes;
/* Use optimal data transfer method based on source address and size */
switch (((u32) data) & 0x3) {
switch (((uintptr_t) data) & 0x3) {
case 0: /* 32-bit aligned */
p32 = (u32 *) data;
cbytes = (bytes & ~0x3);
@ -1252,7 +1252,7 @@ static void udc_stuff_fifo(struct lpc32xx_udc *udc, u8 *data, u32 bytes)
u32 *p32, tmp, cbytes;
/* Use optimal data transfer method based on source address and size */
switch (((u32) data) & 0x3) {
switch (((uintptr_t) data) & 0x3) {
case 0: /* 32-bit aligned */
p32 = (u32 *) data;
cbytes = (bytes & ~0x3);