| Message ID | 20240415-fix-cocci-v1-1-477afb23728b@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: Fix coccinelle warning/errors | expand |
On 15. 04. 24 21:34, Ricardo Ribalda wrote: > The struct resource end field is inclusive not exclusive, this is, the > size is (end - start) +1. > > Update the definitions and use the generic resource_size() function. > > Fixes cocci check: > drivers/media/pci/mgb4/mgb4_regs.c:13:22-25: WARNING: Suspicious code. resource_size is maybe missing with res > > Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> > --- > drivers/media/pci/mgb4/mgb4_core.c | 4 ++-- > drivers/media/pci/mgb4/mgb4_regs.c | 2 +- > 2 files changed, 3 insertions(+), 3 deletions(-) > > diff --git a/drivers/media/pci/mgb4/mgb4_core.c b/drivers/media/pci/mgb4/mgb4_core.c > index 9bcf10a77fd3..60498a5abebf 100644 > --- a/drivers/media/pci/mgb4/mgb4_core.c > +++ b/drivers/media/pci/mgb4/mgb4_core.c > @@ -493,13 +493,13 @@ static int mgb4_probe(struct pci_dev *pdev, const struct pci_device_id *id) > struct mgb4_dev *mgbdev; > struct resource video = { > .start = 0x0, > - .end = 0x100, > + .end = 0xff, > .flags = IORESOURCE_MEM, > .name = "mgb4-video", > }; > struct resource cmt = { > .start = 0x1000, > - .end = 0x1800, > + .end = 0x17ff, > .flags = IORESOURCE_MEM, > .name = "mgb4-cmt", > }; > diff --git a/drivers/media/pci/mgb4/mgb4_regs.c b/drivers/media/pci/mgb4/mgb4_regs.c > index 53d4e4503a74..31befd722d72 100644 > --- a/drivers/media/pci/mgb4/mgb4_regs.c > +++ b/drivers/media/pci/mgb4/mgb4_regs.c > @@ -10,7 +10,7 @@ > int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs) > { > regs->mapbase = res->start; > - regs->mapsize = res->end - res->start; > + regs->mapsize = resource_size(res); > > if (!request_mem_region(regs->mapbase, regs->mapsize, res->name)) > return -EINVAL; > Reviewed-by: Martin Tůma <martin.tuma@digiteqautomotive.com>
diff --git a/drivers/media/pci/mgb4/mgb4_core.c b/drivers/media/pci/mgb4/mgb4_core.c index 9bcf10a77fd3..60498a5abebf 100644 --- a/drivers/media/pci/mgb4/mgb4_core.c +++ b/drivers/media/pci/mgb4/mgb4_core.c @@ -493,13 +493,13 @@ static int mgb4_probe(struct pci_dev *pdev, const struct pci_device_id *id) struct mgb4_dev *mgbdev; struct resource video = { .start = 0x0, - .end = 0x100, + .end = 0xff, .flags = IORESOURCE_MEM, .name = "mgb4-video", }; struct resource cmt = { .start = 0x1000, - .end = 0x1800, + .end = 0x17ff, .flags = IORESOURCE_MEM, .name = "mgb4-cmt", }; diff --git a/drivers/media/pci/mgb4/mgb4_regs.c b/drivers/media/pci/mgb4/mgb4_regs.c index 53d4e4503a74..31befd722d72 100644 --- a/drivers/media/pci/mgb4/mgb4_regs.c +++ b/drivers/media/pci/mgb4/mgb4_regs.c @@ -10,7 +10,7 @@ int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs) { regs->mapbase = res->start; - regs->mapsize = res->end - res->start; + regs->mapsize = resource_size(res); if (!request_mem_region(regs->mapbase, regs->mapsize, res->name)) return -EINVAL;
The struct resource end field is inclusive not exclusive, this is, the size is (end - start) +1. Update the definitions and use the generic resource_size() function. Fixes cocci check: drivers/media/pci/mgb4/mgb4_regs.c:13:22-25: WARNING: Suspicious code. resource_size is maybe missing with res Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> --- drivers/media/pci/mgb4/mgb4_core.c | 4 ++-- drivers/media/pci/mgb4/mgb4_regs.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-)