| Message ID | 20240426050512.57384-1-quic_kriskura@quicinc.com |
|---|---|
| State | New |
| Headers | show |
| Series | usb: dwc3: core: Fix compile warning on s390 gcc in dwc3_get_phy call | expand |
On Fri, Apr 26, 2024 at 10:35:12AM +0530, Krishna Kurapati wrote: > Recent commit introduced support for reading Multiport PHYs and > while doing so iterated over an integer variable which runs from > [0-254] in the worst case scenario. But S390 compiler treats it as a > warning and complains that the integer write to string can go to 11 > characters. Fix this by modifying iterator variable to u8. > > Suggested-by: Johan Hovold <johan@kernel.org> > Fixes: 30a46746ca5a ("usb: dwc3: core: Refactor PHY logic to support Multiport Controller") > Reported-by: kernel test robot <lkp@intel.com> > Closes: https://lore.kernel.org/oe-kbuild-all/202404241215.Mib19Cu7-lkp@intel.com/ > Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com> > --- > drivers/usb/dwc3/core.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c > index 4dc6fc79c6d9..719305ab86c0 100644 > --- a/drivers/usb/dwc3/core.c > +++ b/drivers/usb/dwc3/core.c > @@ -1449,7 +1449,7 @@ static int dwc3_core_get_phy(struct dwc3 *dwc) > struct device_node *node = dev->of_node; > char phy_name[9]; > int ret; > - int i; > + u8 i; Perhaps unsigned int would have been better, but this should work too (the broken compiler did get the upper bound right). I assume you did not install a cross-compiler and tried to reproduce the bogus warning? In any case, if we want to suppress that bogus W=1 warning, this looks good to me: Reviewed-by: Johan Hovold <johan+linaro@kernel.org> Johan
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 4dc6fc79c6d9..719305ab86c0 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1449,7 +1449,7 @@ static int dwc3_core_get_phy(struct dwc3 *dwc) struct device_node *node = dev->of_node; char phy_name[9]; int ret; - int i; + u8 i; if (node) { dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0); @@ -1479,7 +1479,7 @@ static int dwc3_core_get_phy(struct dwc3 *dwc) if (dwc->num_usb2_ports == 1) snprintf(phy_name, sizeof(phy_name), "usb2-phy"); else - snprintf(phy_name, sizeof(phy_name), "usb2-%d", i); + snprintf(phy_name, sizeof(phy_name), "usb2-%u", i); dwc->usb2_generic_phy[i] = devm_phy_get(dev, phy_name); if (IS_ERR(dwc->usb2_generic_phy[i])) { @@ -1496,7 +1496,7 @@ static int dwc3_core_get_phy(struct dwc3 *dwc) if (dwc->num_usb3_ports == 1) snprintf(phy_name, sizeof(phy_name), "usb3-phy"); else - snprintf(phy_name, sizeof(phy_name), "usb3-%d", i); + snprintf(phy_name, sizeof(phy_name), "usb3-%u", i); dwc->usb3_generic_phy[i] = devm_phy_get(dev, phy_name); if (IS_ERR(dwc->usb3_generic_phy[i])) {
Recent commit introduced support for reading Multiport PHYs and while doing so iterated over an integer variable which runs from [0-254] in the worst case scenario. But S390 compiler treats it as a warning and complains that the integer write to string can go to 11 characters. Fix this by modifying iterator variable to u8. Suggested-by: Johan Hovold <johan@kernel.org> Fixes: 30a46746ca5a ("usb: dwc3: core: Refactor PHY logic to support Multiport Controller") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202404241215.Mib19Cu7-lkp@intel.com/ Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com> --- drivers/usb/dwc3/core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)