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usb: host: Replace empty define with do while

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It's dangerous to use empty code define.
Furthermore it lead to the following warning:
"suggest braces around empty body in an « else » statement"

So let's replace emptyness by "do {} while(0)"

Furthermore, as suggested by Joe Perches, rename the macro to INCR.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Corentin Labbe 2018-09-19 19:48:53 +00:00 committed by Greg Kroah-Hartman
parent 1906f64f64
commit a0ef2bdfa3
6 changed files with 16 additions and 16 deletions
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6
drivers/usb/host/ehci-hcd.c
View file

@ -730,9 +730,9 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
/* normal [4.15.1.2] or error [4.15.1.1] completion */
if (likely ((status & (STS_INT|STS_ERR)) != 0)) {
if (likely ((status & STS_ERR) == 0))
COUNT (ehci->stats.normal);
INCR(ehci->stats.normal);
else
COUNT (ehci->stats.error);
INCR(ehci->stats.error);
bh = 1;
}
@ -756,7 +756,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
if (cmd & CMD_IAAD)
ehci_dbg(ehci, "IAA with IAAD still set?\n");
if (ehci->iaa_in_progress)
COUNT(ehci->stats.iaa);
INCR(ehci->stats.iaa);
end_iaa_cycle(ehci);
}

4
drivers/usb/host/ehci-q.c
View file

@ -245,12 +245,12 @@ ehci_urb_done(struct ehci_hcd *ehci, struct urb *urb, int status)
}
if (unlikely(urb->unlinked)) {
COUNT(ehci->stats.unlink);
INCR(ehci->stats.unlink);
} else {
/* report non-error and short read status as zero */
if (status == -EINPROGRESS || status == -EREMOTEIO)
status = 0;
COUNT(ehci->stats.complete);
INCR(ehci->stats.complete);
}
#ifdef EHCI_URB_TRACE

2
drivers/usb/host/ehci-timer.c
View file

@ -347,7 +347,7 @@ static void ehci_iaa_watchdog(struct ehci_hcd *ehci)
*/
status = ehci_readl(ehci, &ehci->regs->status);
if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
COUNT(ehci->stats.lost_iaa);
INCR(ehci->stats.lost_iaa);
ehci_writel(ehci, STS_IAA, &ehci->regs->status);
}

4
drivers/usb/host/ehci.h
View file

@ -235,9 +235,9 @@ struct ehci_hcd { /* one per controller */
/* irq statistics */
#ifdef EHCI_STATS
struct ehci_stats stats;
# define COUNT(x) ((x)++)
# define INCR(x) ((x)++)
#else
# define COUNT(x)
# define INCR(x) do {} while (0)
#endif
/* debug files */

12
drivers/usb/host/fotg210-hcd.c
View file

@ -1286,7 +1286,7 @@ static void fotg210_iaa_watchdog(struct fotg210_hcd *fotg210)
*/
status = fotg210_readl(fotg210, &fotg210->regs->status);
if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
COUNT(fotg210->stats.lost_iaa);
INCR(fotg210->stats.lost_iaa);
fotg210_writel(fotg210, STS_IAA,
&fotg210->regs->status);
}
@ -2205,12 +2205,12 @@ __acquires(fotg210->lock)
}
if (unlikely(urb->unlinked)) {
COUNT(fotg210->stats.unlink);
INCR(fotg210->stats.unlink);
} else {
/* report non-error and short read status as zero */
if (status == -EINPROGRESS || status == -EREMOTEIO)
status = 0;
COUNT(fotg210->stats.complete);
INCR(fotg210->stats.complete);
}
#ifdef FOTG210_URB_TRACE
@ -5154,9 +5154,9 @@ static irqreturn_t fotg210_irq(struct usb_hcd *hcd)
/* normal [4.15.1.2] or error [4.15.1.1] completion */
if (likely((status & (STS_INT|STS_ERR)) != 0)) {
if (likely((status & STS_ERR) == 0))
COUNT(fotg210->stats.normal);
INCR(fotg210->stats.normal);
else
COUNT(fotg210->stats.error);
INCR(fotg210->stats.error);
bh = 1;
}
@ -5181,7 +5181,7 @@ static irqreturn_t fotg210_irq(struct usb_hcd *hcd)
if (cmd & CMD_IAAD)
fotg210_dbg(fotg210, "IAA with IAAD still set?\n");
if (fotg210->async_iaa) {
COUNT(fotg210->stats.iaa);
INCR(fotg210->stats.iaa);
end_unlink_async(fotg210);
} else
fotg210_dbg(fotg210, "IAA with nothing unlinked?\n");

4
drivers/usb/host/fotg210.h
View file

@ -177,9 +177,9 @@ struct fotg210_hcd { /* one per controller */
/* irq statistics */
#ifdef FOTG210_STATS
struct fotg210_stats stats;
# define COUNT(x) ((x)++)
# define INCR(x) ((x)++)
#else
# define COUNT(x)
# define INCR(x) do {} while (0)
#endif
/* silicon clock */