Hi Caleb,

Thank you for the patch.

On jeu., mars 21, 2024 at 15:28, Caleb Connolly <caleb.conno...@linaro.org> 
wrote:

> The patch introducing support for dynamic sector sizes changed the types
> used in some divisions, resulting in the compiler attempting to use
> libgcc helpers (__aeabi_ldivmod). Replace these divisions with calls to
> lldiv() to handle this correctly.
>
> Fixes: 74e56e0c5065 ("usb: gadget: UMS: support multiple sector sizes")
> Signed-off-by: Caleb Connolly <caleb.conno...@linaro.org>

Reviewed-by: Mattijs Korpershoek <mkorpersh...@baylibre.com>

Would it be okay if I squashed this into
commit 74e56e0c5065 ("usb: gadget: UMS: support multiple sector sizes")
?

I'd like to not (intentionally) send any patches that don't compile to Tom.


> ---
> Hi Mattijs,
>
> Sorry for not catching that sooner! I compile tested this locally and a

No worries, thanks a lot for the quick fix.

> CI pipeline is running here: 
> https://source.denx.de/u-boot/custodians/u-boot-snapdragon/-/pipelines/20029

I can see from the above pipeline that some other failures are ongoing,
but they are not related to lldiv().

arm-linux-gnueabi-ld.bfd: common/dfu.o: in function `run_usb_dnl_gadget':
common/dfu.c:82:(.text.run_usb_dnl_gadget+0xd8): undefined reference to 
`dm_usb_gadget_handle_interrupts'
arm-linux-gnueabi-ld.bfd: common/dfu.c:108:(.text.run_usb_dnl_gadget+0x11c): 
undefined reference to `dm_usb_gadget_handle_interrupts'
make[1]: *** [Makefile:1793: u-boot] Error

See: 
https://source.denx.de/u-boot/custodians/u-boot-snapdragon/-/jobs/802759#L470

I suspect that this is related to:
https://lore.kernel.org/r/all/20240225152715.1821613-1-jo...@kwiboo.se/


>
> Regards,
> Caleb
> ---
>  drivers/usb/gadget/f_mass_storage.c | 13 +++++++------
>  1 file changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/usb/gadget/f_mass_storage.c 
> b/drivers/usb/gadget/f_mass_storage.c
> index d880928044f4..ef90c7ec7fb5 100644
> --- a/drivers/usb/gadget/f_mass_storage.c
> +++ b/drivers/usb/gadget/f_mass_storage.c
> @@ -239,8 +239,9 @@
>  /* #define VERBOSE_DEBUG */
>  /* #define DUMP_MSGS */
>  
>  #include <config.h>
> +#include <div64.h>
>  #include <hexdump.h>
>  #include <log.h>
>  #include <malloc.h>
>  #include <common.h>
> @@ -768,10 +769,10 @@ static int do_read(struct fsg_common *common)
>               }
>  
>               /* Perform the read */
>               rc = ums[common->lun].read_sector(&ums[common->lun],
> -                                   file_offset / curlun->blksize,
> -                                   amount / curlun->blksize,
> +                                   lldiv(file_offset, curlun->blksize),
> +                                   lldiv(amount, curlun->blksize),
>                                     (char __user *)bh->buf);
>               if (!rc)
>                       return -EIO;
>  
> @@ -942,10 +943,10 @@ static int do_write(struct fsg_common *common)
>                       amount = bh->outreq->actual;
>  
>                       /* Perform the write */
>                       rc = ums[common->lun].write_sector(&ums[common->lun],
> -                                            file_offset / curlun->blksize,
> -                                            amount / curlun->blksize,
> +                                            lldiv(file_offset, 
> curlun->blksize),
> +                                            lldiv(amount, curlun->blksize),
>                                              (char __user *)bh->buf);
>                       if (!rc)
>                               return -EIO;
>                       nwritten = rc * curlun->blksize;
> @@ -1058,10 +1059,10 @@ static int do_verify(struct fsg_common *common)
>               }
>  
>               /* Perform the read */
>               rc = ums[common->lun].read_sector(&ums[common->lun],
> -                                   file_offset / curlun->blksize,
> -                                   amount / curlun->blksize,
> +                                   lldiv(file_offset, curlun->blksize),
> +                                   lldiv(amount, curlun->blksize),
>                                     (char __user *)bh->buf);
>               if (!rc)
>                       return -EIO;
>               nread = rc * curlun->blksize;
> -- 
> 2.44.0

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