On Thu, May 23, 2024 at 08:23:57PM +0800, shichao lai wrote: > On Thu, May 23, 2024 at 7:47 PM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > > On Thu, May 23, 2024 at 07:34:10PM +0800, Shichao Lai wrote: > > > Since uzonesize may be zero, so judgements for non-zero > > > are necessary in both place. > > > > > > Changes since v1: > > > - Add one more check in alauda_write_lba(). > > > - Move check ahead of loop in alauda_read_data(). > > > > Nit, this changes list should go below the --- line, as the > > documentation asks for. > > Sorry for my inexperience. I have read the document and found some > examples but I am still a little confused about this. > I guess this is what you mean? > > Since uzonesize may be zero ... (context) > > Reported-by: xingwei lee <xrivendell7@xxxxxxxxx> > Reported-by: yue sun <samsun1006219@xxxxxxxxx> > Signed-off-by: Shichao Lai <shichaorai@xxxxxxxxx> > --- > Changes since v1: > - Add one more check in alauda_write_lba(). > - Move check ahead of loop in alauda_read_data(). Yes. > > drivers/usb/storage/alauda.c | 4 ++++ > 1 file changed, 4 insertions(+) > ... > > > > > Check after the list of variables please, not in the middle of them. I > > think checkpatch will complain about this, right? > > In fact this script doesn't warn about these problems, but I will > adjust my code style later. > But the check in alauda_write_lba() is due to some variable like > lba_offset and zone will perform modulo and divide operations, > which may throw divide errors when uzonesize is 0. > So I think I prefer to adjust the order of the variable list later. > Changes like this. > ```c > unsigned int uzonesize = MEDIA_INFO(us).uzonesize; > unsigned int zonesize = MEDIA_INFO(us).zonesize; > unsigned int pagesize = MEDIA_INFO(us).pagesize; > unsigned int blocksize = MEDIA_INFO(us).blocksize; > unsigned int new_pba_offset; > if (!uzonesize) > return USB_STOR_TRANSPORT_ERROR; > unsigned int lba_offset = lba % uzonesize; > unsigned int zone = lba / uzonesize; > ``` > If it's ok, I will post the patch v3 soon. That works, thanks! greg k-h
