Messages in this thread |  | | Date | Tue, 6 Feb 2018 15:08:21 +0100 (CET) | From | Julia Lawall <> | Subject | Re: [PATCH 0/4] tree-wide: fix comparison to bitshift when dealing with a mask |
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On Tue, 6 Feb 2018, Dan Carpenter wrote:
> That found 4 that I think Wolfram's grep missed. > > arch/um/drivers/vector_user.h | 2 -- > drivers/gpu/drm/mxsfb/mxsfb_regs.h | 2 -- > drivers/video/fbdev/mxsfb.c | 2 -- > include/drm/drm_scdc_helper.h | 3 --- > > But it didn't find the two bugs that Geert found where the right side > wasn't a number literal. > > drivers/net/can/m_can/m_can.c:#define RXFC_FWM_MASK (0x7f < RXFC_FWM_SHIFT)
OK, I can easily add this in - I've got rules to protect against reporting it at the moment. It may end up with false positives.
> drivers/usb/gadget/udc/goku_udc.h:#define INT_EPnNAK(n) (0x00100 < (n)) /* 0 < n < 4 */
This is indeed harder, because one has to look at the usage site.
julia
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