Hi, On 12/2/20 2:19 PM, Divya Bharathi wrote: > BIOS sets incorrect value (zero) when SET value passed for integer attribute > with + sign. Added workaround to remove + sign before passing input to BIOS > > Co-developed-by: Mario Limonciello <mario.limonciello@xxxxxxxx> > Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxxx> > Co-developed-by: Prasanth KSR <prasanth.ksr@xxxxxxxx> > Signed-off-by: Prasanth KSR <prasanth.ksr@xxxxxxxx> > Signed-off-by: Divya Bharathi <divya.bharathi@xxxxxxxx> Thank you for your patch, I've applied this patch to my review-hans branch: https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans Note it will show up in my review-hans branch once I've pushed my local branch there, which might take a while. Once I've run some tests on this branch the patches there will be added to the platform-drivers-x86/for-next branch and eventually will be included in the pdx86 pull-request to Linus for the next merge-window. Regards, Hans > --- > drivers/platform/x86/dell-wmi-sysman/int-attributes.c | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > > diff --git a/drivers/platform/x86/dell-wmi-sysman/int-attributes.c b/drivers/platform/x86/dell-wmi-sysman/int-attributes.c > index ea773d8e8d3a..75aedbb733be 100644 > --- a/drivers/platform/x86/dell-wmi-sysman/int-attributes.c > +++ b/drivers/platform/x86/dell-wmi-sysman/int-attributes.c > @@ -39,7 +39,7 @@ static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *a > * @instance_id: The instance on which input is validated > * @buf: Input value > */ > -static int validate_integer_input(int instance_id, const char *buf) > +static int validate_integer_input(int instance_id, char *buf) > { > int in_val; > int ret; > @@ -51,6 +51,12 @@ static int validate_integer_input(int instance_id, const char *buf) > in_val > wmi_priv.integer_data[instance_id].max_value) > return -EINVAL; > > + /* workaround for BIOS error. > + * validate input to avoid setting 0 when integer input passed with + sign > + */ > + if (*buf == '+') > + memmove(buf, (buf + 1), strlen(buf + 1) + 1); > + > return ret; > } > >
