| Message ID | ZNIM7tlBNdHFzXZG@lenoch |
|---|---|
| State | New |
| Headers | show |
| Series | usb: dwc3: dwc3-octeon: Verify clock divider | expand |
On Tue, Aug 08, 2023 at 12:38:46PM +0200, Ladislav Michl wrote: > On Tue, Aug 08, 2023 at 12:00:42PM +0200, Greg Kroah-Hartman wrote: > > On Tue, Aug 08, 2023 at 11:37:50AM +0200, Ladislav Michl wrote: > > > From: Ladislav Michl <ladis@linux-mips.org> > > > > > > Although valid USB clock divider will be calculated for all valid > > > Octeon core frequencies, make code formally correct limiting > > > divider not to be greater that 7 so it fits into H_CLKDIV_SEL > > > field. > > > > > > Signed-off-by: Ladislav Michl <ladis@linux-mips.org> > > > Reported-by: Linux Kernel Functional Testing <lkft@linaro.org> > > > Closes: https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230808/testrun/18882876/suite/build/test/gcc-8-cavium_octeon_defconfig/log > > > --- > > > Greg, if you want to resent whole serie, just drop me a note. > > > Otherwise, this patch is meant to be applied on to of it. > > > > On top of what series? > > I'm sorry, "[PATCH v5 0/7] Cleanup Octeon DWC3 glue code". > In your usb-next, last patch of serie is: > d9216d3ef538 ("usb: dwc3: dwc3-octeon: Add SPDX header and copyright") I already took that series, so this is fine, I don't want to revert that and have to add it all back :) thanks, greg k-h
On 8/8/23 11:37, Ladislav Michl wrote: > From: Ladislav Michl <ladis@linux-mips.org> > > Although valid USB clock divider will be calculated for all valid > Octeon core frequencies, make code formally correct limiting > divider not to be greater that 7 so it fits into H_CLKDIV_SEL > field. > > Signed-off-by: Ladislav Michl <ladis@linux-mips.org> > Reported-by: Linux Kernel Functional Testing <lkft@linaro.org> > Closes: https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230808/testrun/18882876/suite/build/test/gcc-8-cavium_octeon_defconfig/log > --- > Greg, if you want to resent whole serie, just drop me a note. > Otherwise, this patch is meant to be applied on to of it. > Thank you. > > drivers/usb/dwc3/dwc3-octeon.c | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
diff --git a/drivers/usb/dwc3/dwc3-octeon.c b/drivers/usb/dwc3/dwc3-octeon.c index 6f47262a117a..73bdcebf465c 100644 --- a/drivers/usb/dwc3/dwc3-octeon.c +++ b/drivers/usb/dwc3/dwc3-octeon.c @@ -251,11 +251,11 @@ static int dwc3_octeon_get_divider(void) while (div < ARRAY_SIZE(clk_div)) { uint64_t rate = octeon_get_io_clock_rate() / clk_div[div]; if (rate <= 300000000 && rate >= 150000000) - break; + return div; div++; } - return div; + return -EINVAL; } static int dwc3_octeon_setup(struct dwc3_octeon *octeon, @@ -289,6 +289,10 @@ static int dwc3_octeon_setup(struct dwc3_octeon *octeon, /* Step 4b: Select controller clock frequency. */ div = dwc3_octeon_get_divider(); + if (div < 0) { + dev_err(dev, "clock divider invalid\n"); + return div; + } val = dwc3_octeon_readq(uctl_ctl_reg); val &= ~USBDRD_UCTL_CTL_H_CLKDIV_SEL; val |= FIELD_PREP(USBDRD_UCTL_CTL_H_CLKDIV_SEL, div);