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Groups > linux.kernel > #1245157
| From | Peter Senna Tschudin <peter.senna@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 6/9] usb/host/fotg210: replace msleep by usleep_range |
| Date | 2015-10-12 23:30 +0200 |
| Message-ID | <qiSPp-2Lm-45@gated-at.bofh.it> (permalink) |
| References | <qbaT7-1N0-3@gated-at.bofh.it> <qiSPo-2Lm-25@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
msleep under 20ms can result in sleeping up to 20ms, which may not be intended. Replace msleep(5) by usleep_range(5000, 10000). The range of 5 ms is to reduce the chances of creating an interrupt while reducing the maximum wait time in 50%. Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> --- drivers/usb/host/fotg210-hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c index ae3806d..5413358 100644 --- a/drivers/usb/host/fotg210-hcd.c +++ b/drivers/usb/host/fotg210-hcd.c @@ -5085,7 +5085,7 @@ static int fotg210_run(struct usb_hcd *hcd) fotg210->rh_state = FOTG210_RH_RUNNING; /* unblock posted writes */ fotg210_readl(fotg210, &fotg210->regs->command); - msleep(5); + usleep_range(5000, 10000); up_write(&ehci_cf_port_reset_rwsem); fotg210->last_periodic_enable = ktime_get_real(); -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH 0/9] usb/host/fotg210: code style and warning fixes Peter Senna Tschudin <peter.senna@gmail.com> - 2015-10-12 23:30 +0200
[PATCH 6/9] usb/host/fotg210: replace msleep by usleep_range Peter Senna Tschudin <peter.senna@gmail.com> - 2015-10-12 23:30 +0200
[PATCH 4/9] usb/host/fotg210: Remove NULL checks dma_pool_destroy Peter Senna Tschudin <peter.senna@gmail.com> - 2015-10-12 23:30 +0200
[PATCH 8/9] usb/host/fotg210: Add function: output_buf_tds_dir() Peter Senna Tschudin <peter.senna@gmail.com> - 2015-10-12 23:30 +0200
[PATCH 3/9] usb/host/fotg210: Remove useless else statement Peter Senna Tschudin <peter.senna@gmail.com> - 2015-10-12 23:30 +0200
Re: [PATCH 3/9] usb/host/fotg210: Remove useless else statement Joe Perches <joe@perches.com> - 2015-10-13 00:10 +0200
[PATCH 3/9 V2] usb/host/fotg210: Remove return statement inside if Peter Senna Tschudin <peter.senna@gmail.com> - 2015-10-17 21:40 +0200
[PATCH 2/9] usb/host/fotg210: remove KERN_WARNING from pr_warn Peter Senna Tschudin <peter.senna@gmail.com> - 2015-10-12 23:30 +0200
[PATCH 7/9] usb/host/fotg210: convert macro to inline function Peter Senna Tschudin <peter.senna@gmail.com> - 2015-10-12 23:30 +0200
[PATCH 9/9] usb/host/fotg210: Add function scan_frame_queue() Peter Senna Tschudin <peter.senna@gmail.com> - 2015-10-12 23:30 +0200
[PATCH 5/9] usb/host/fotg210: change kmalloc by kmalloc_array Peter Senna Tschudin <peter.senna@gmail.com> - 2015-10-12 23:30 +0200
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