Messages in this thread | | | Date | Wed, 06 May 2015 11:43:39 +0300 | From | "ivan.khoronzhuk" <> | Subject | Re: [PATCH 3.2 068/221] firmware: dmi_scan: Fix dmi_len type |
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Hi Ben,
There is no need in this patch for 3.2, only beginning from 3.19. SMBIOSv3 is absent in k3.2, and for previous SMBIOS versions 16-bit dmi len is enough. It should had been mentioned in the commit/code, sorry.
On 05.05.15 04:16, Ben Hutchings wrote: > 3.2.69-rc1 review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org> > > commit 6d9ff473317245e3e5cd9922b4520411c2296388 upstream. > > According to SMBIOSv3 specification the length of DMI table can be > up to 32bits wide. So use appropriate type to avoid overflow. > > It's obvious that dmi_num theoretically can be more than u16 also, > so it's can be changed to u32 or at least it's better to use int > instead of u16, but on that moment I cannot imagine dmi structure > count more than 65535 and it can require changing type of vars that > work with it. So I didn't correct it. > > Acked-by: Ard Biesheuvel <ard@linaro.org> > Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org> > Signed-off-by: Matt Fleming <matt.fleming@intel.com> > [bwh: Backported to 3.2: adjust context] > Signed-off-by: Ben Hutchings <ben@decadent.org.uk> > --- > drivers/firmware/dmi_scan.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > --- a/drivers/firmware/dmi_scan.c > +++ b/drivers/firmware/dmi_scan.c > @@ -69,7 +69,7 @@ static char * __init dmi_string(const st > * We have to be cautious here. We have seen BIOSes with DMI pointers > * pointing to completely the wrong place for example > */ > -static void dmi_table(u8 *buf, int len, int num, > +static void dmi_table(u8 *buf, u32 len, int num, > void (*decode)(const struct dmi_header *, void *), > void *private_data) > { > @@ -99,7 +99,7 @@ static void dmi_table(u8 *buf, int len, > } > > static u32 dmi_base; > -static u16 dmi_len; > +static u32 dmi_len; > static u16 dmi_num; > > static int __init dmi_walk_early(void (*decode)(const struct dmi_header *, > > -- > 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/
-- Regards, Ivan Khoronzhuk
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