From 792e559e94bc88a281b10568e99fc469fc28a34d Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 18 Sep 2019 22:01:41 +0200 Subject: [PATCH] udc: lpc32xx: fix 64-bit compiler warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20190918200201.2292008-1-arnd@arndb.de Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/Kconfig | 2 +- drivers/usb/gadget/udc/lpc32xx_udc.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig index d7e611645533..d354036ff6c8 100644 --- a/drivers/usb/gadget/udc/Kconfig +++ b/drivers/usb/gadget/udc/Kconfig @@ -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 diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c index b3e073fb88c6..2b1f3cc7819b 100644 --- a/drivers/usb/gadget/udc/lpc32xx_udc.c +++ b/drivers/usb/gadget/udc/lpc32xx_udc.c @@ -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);