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USB: make transfer_buffer_lengths in struct urb field u32

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Roel Kluin pointed out that transfer_buffer_lengths in struct urb was
declared as an 'int'.  This patch changes this field to be 'u32' to
prevent any potential negative conversion and comparison errors.

This triggered a few compiler warning messages when these fields were
being used with the min macro, so they have also been fixed up in this
patch.

Cc: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman
2009-03-03 16:44:13 -08:00
parent 7ea0a2bcfe
commit 16e2e5f634
6 changed files with 9 additions and 9 deletions
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6
drivers/usb/misc/ftdi-elan.c
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@@ -1568,7 +1568,7 @@ static int ftdi_elan_edset_input(struct usb_ftdi *ftdi, u8 ed_number,
struct u132_target *target = &ftdi->target[ed];
struct u132_command *command = &ftdi->command[
COMMAND_MASK & ftdi->command_next];
int remaining_length = urb->transfer_buffer_length -
u32 remaining_length = urb->transfer_buffer_length -
urb->actual_length;
command->header = 0x82 | (ed << 5);
if (remaining_length == 0) {
@@ -1702,7 +1702,7 @@ static int ftdi_elan_edset_output(struct usb_ftdi *ftdi, u8 ed_number,
| (address << 0);
command->width = usb_maxpacket(urb->dev, urb->pipe,
usb_pipeout(urb->pipe));
command->follows = min(1024,
command->follows = min_t(u32, 1024,
urb->transfer_buffer_length -
urb->actual_length);
command->value = 0;
@@ -1766,7 +1766,7 @@ static int ftdi_elan_edset_single(struct usb_ftdi *ftdi, u8 ed_number,
mutex_lock(&ftdi->u132_lock);
command_size = ftdi->command_next - ftdi->command_head;
if (command_size < COMMAND_SIZE) {
int remaining_length = urb->transfer_buffer_length -
u32 remaining_length = urb->transfer_buffer_length -
urb->actual_length;
struct u132_target *target = &ftdi->target[ed];
struct u132_command *command = &ftdi->command[