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usb: host: ohci: Mark cc_to_error as __maybe_unused

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drivers/usb/host/ohci.h in included by a whole much of different
sourcefiles.  Not all of them make use of cc_to_error.  So mark
it as __maybe_used to convey that this behaviour is not only
acceptable it's expected.

Fixes the following kernel build warning(s):

 In file included from drivers/usb/host/ohci-pci.c:25:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-platform.c:32:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-exynos.c:20:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-spear.c:22:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-st.c:26:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-at91.c:31:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~
 In file included from drivers/usb/host/ohci-s3c2410.c:32:
 drivers/usb/host/ohci.h:165:18: warning: ‘cc_to_error’ defined but not used [-Wunused-const-variable=]
 165 | static const int cc_to_error 1 = {
 | ^~~~~~~~~~~

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Roman Weissgaerber <weissg@vienna.at>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-22-lee.jones@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lee Jones 2020-07-02 15:46:16 +01:00 committed by Greg Kroah-Hartman
parent f73a8db011
commit 9dac16e448
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/host/ohci.h
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@ -162,7 +162,7 @@ struct td {
/* map OHCI TD status codes (CC) to errno values */
static const int cc_to_error [16] = {
static const int __maybe_unused cc_to_error [16] = {
/* No Error */ 0,
/* CRC Error */ -EILSEQ,
/* Bit Stuff */ -EPROTO,