Stefan Reinauer ([email protected]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2653
-gerrit commit 67602843f673307645a4e5b39772e00548e14c86 Author: Gabe Black <[email protected]> Date: Tue Jan 15 16:22:04 2013 -0800 libpayload: In the USBMSC read_capacity function, make buf an array of u32. That way when it's treated as a u32 when its value is extracted for numblocks and blocksize below, it doesn't make the compiler unhappy, and it ensures that the buffer will be properly aligned on architectures where that sort of thing matters. Built and saw warnings about type punning go away. Change-Id: I254e0b5e70847112d660675b7df0ac9cb52e4051 Signed-off-by: Gabe Black <[email protected]> --- payloads/libpayload/drivers/usb/usbmsc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/payloads/libpayload/drivers/usb/usbmsc.c b/payloads/libpayload/drivers/usb/usbmsc.c index 0032f58..16af448 100644 --- a/payloads/libpayload/drivers/usb/usbmsc.c +++ b/payloads/libpayload/drivers/usb/usbmsc.c @@ -375,14 +375,14 @@ read_capacity (usbdev_t *dev) cmdblock_t cb; memset (&cb, 0, sizeof (cb)); cb.command = 0x25; // read capacity - u8 buf[8]; + u32 buf[2]; usb_debug ("Reading capacity of mass storage device.\n"); int count = 0, ret; while (count++ < 20) { switch (ret = execute_command (dev, cbw_direction_data_in, (u8 *) &cb, - sizeof (cb), buf, 8, 0)) { + sizeof (cb), (u8 *)buf, 8, 0)) { case MSC_COMMAND_OK: break; case MSC_COMMAND_FAIL: @@ -398,8 +398,8 @@ read_capacity (usbdev_t *dev) MSC_INST (dev)->numblocks = 0xffffffff; MSC_INST (dev)->blocksize = 512; } else { - MSC_INST (dev)->numblocks = ntohl (*(u32 *) buf) + 1; - MSC_INST (dev)->blocksize = ntohl (*(u32 *) (buf + 4)); + MSC_INST (dev)->numblocks = ntohl(buf[0]) + 1; + MSC_INST (dev)->blocksize = ntohl(buf[1]); } usb_debug (" %d %d-byte sectors (%d MB)\n", MSC_INST (dev)->numblocks, MSC_INST (dev)->blocksize, -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
