Commit bbfe0f37 authored by Nicholas Mc Guire's avatar Nicholas Mc Guire Committed by David S. Miller

irda: irda-usb: use msecs_to_jiffies for conversions

API compliance scanning with coccinelle flagged:

Converting milliseconds to jiffies by "val * HZ / 1000" is technically
is not a clean solution as it does not handle all corner cases correctly.
By changing the conversion to use msecs_to_jiffies(val) conversion is
correct in all cases.

in the current code:
  mod_timer(&self->rx_defer_timer, jiffies + (10 * HZ / 1000));
for HZ < 100 (e.g. CONFIG_HZ == 64|32 in alpha) this effectively results
in no delay at all.

Patch was compile tested for x86_64_defconfig (implies CONFIG_USB_IRDA=m)

Patch is against 4.1-rc4 (localversion-next is -next-20150522)
Signed-off-by: default avatarNicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6ae4ae8e
......@@ -848,7 +848,9 @@ static void irda_usb_receive(struct urb *urb)
* Jean II */
self->rx_defer_timer.function = irda_usb_rx_defer_expired;
self->rx_defer_timer.data = (unsigned long) urb;
mod_timer(&self->rx_defer_timer, jiffies + (10 * HZ / 1000));
mod_timer(&self->rx_defer_timer,
jiffies + msecs_to_jiffies(10));
return;
}
......
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