Re: [PATCH v2] mmc-utils: correct and clean up the file handling

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On Tue, 6 Sept 2022 at 12:14, Matic, Bruno (Nokia - DE/Ulm)
<bruno.matic@xxxxxxxxx> wrote:
>
> Hi everyone,
>
> Previous patch did pass the checks and applied to the repository, but since I use yocto as my development environment
> the warnings about hunk offsets were ignored.
> I have now re-rolled patch on top of a clean mmc-utils repository - changes are the same.
> Hopefully this will be ok now.

Sorry, but no this isn't much better it seems. From the guide [1],
there are a couple of important steps that you need to follow. Please
have a closer look.

1) Format the patch according to the "canonical patch format" with
"git format-patch".
2. Run ./scripts/checkpatch.pl (the script is available in kernel code
tree) on the formatted patch - and fix the potential warnings/errors.
3) Submit your patch as plain text with git send-email.

Hope this helps!

Kind regards
Uffe

[1]
https://www.kernel.org/doc/html/latest/process/submitting-patches.html

>
> Best regards,
> Bruno Matić
>
> -----------------------------------------------------------------------------------------------
>
> Add the check if the whole firmware was loaded.
> Cleaned up the leftovers of handling the file in chunks.
>
> Signed-off-by: Bruno Matic <bruno.matic@xxxxxxxxx>
> ---
>  mmc_cmds.c | 66 ++++++++++++++++++++++++++----------------------------
>  1 file changed, 32 insertions(+), 34 deletions(-)
>
> diff --git a/mmc_cmds.c b/mmc_cmds.c
> index 12b7802..ef1d8c6 100644
> --- a/mmc_cmds.c
> +++ b/mmc_cmds.c
> @@ -2765,7 +2765,6 @@ int do_ffu(int nargs, char **argv)
>         __u8 *buf = NULL;
>         __u32 arg;
>         off_t fw_size;
> -       ssize_t chunk_size;
>         char *device;
>         struct mmc_ioc_multi_cmd *multi_cmd = NULL;
>
> @@ -2879,45 +2878,44 @@ int do_ffu(int nargs, char **argv)
>         multi_cmd->cmds[3].flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
>         multi_cmd->cmds[3].write_flag = 1;
>
> -do_retry:
> -       /* read firmware chunk */
> +       /* read firmware */
>         lseek(img_fd, 0, SEEK_SET);
> -       chunk_size = read(img_fd, buf, fw_size);
> +       if (read(img_fd, buf, fw_size) != fw_size) {
> +               perror("Could not read the firmware file: ");
> +               ret = -ENOSPC;
> +               goto out;
> +       }
>
> -       if (chunk_size > 0) {
> -               /* send ioctl with multi-cmd */
> -               ret = ioctl(dev_fd, MMC_IOC_MULTI_CMD, multi_cmd);
> +do_retry:
> +       /* send ioctl with multi-cmd */
> +       ret = ioctl(dev_fd, MMC_IOC_MULTI_CMD, multi_cmd);
>
> -               if (ret) {
> -                       perror("Multi-cmd ioctl");
> -                       /* In case multi-cmd ioctl failed before exiting from ffu mode */
> -                       ioctl(dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[3]);
> -                       goto out;
> -               }
> +       if (ret) {
> +               perror("Multi-cmd ioctl");
> +               /* In case multi-cmd ioctl failed before exiting from ffu mode */
> +               ioctl(dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[3]);
> +               goto out;
> +       }
>
> -               ret = read_extcsd(dev_fd, ext_csd);
> -               if (ret) {
> -                       fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
> -                       goto out;
> -               }
> +       ret = read_extcsd(dev_fd, ext_csd);
> +       if (ret) {
> +               fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
> +               goto out;
> +       }
>
> -               /* Test if we need to restart the download */
> -               sect_done = ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_0] |
> -                               ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_1] << 8 |
> -                               ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_2] << 16 |
> -                               ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_3] << 24;
> -               /* By spec, host should re-start download from the first sector if sect_done is 0 */
> -               if (sect_done == 0) {
> -                       if (retry > 0) {
> -                               retry--;
> -                               fprintf(stderr, "Programming failed. Retrying... (%d)\n", retry);
> -                               goto do_retry;
> -                       }
> -                       fprintf(stderr, "Programming failed! Aborting...\n");
> -                       goto out;
> -               } else {
> -                       fprintf(stderr, "Programmed %d/%jd bytes\r", sect_done * sect_size, (intmax_t)fw_size);
> +       /* Test if we need to restart the download */
> +       sect_done = ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_0] |
> +                       ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_1] << 8 |
> +                       ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_2] << 16 |
> +                       ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_3] << 24;
> +       /* By spec, host should re-start download from the first sector if sect_done is 0 */
> +       if (sect_done == 0) {
> +               if (retry--) {
> +                       fprintf(stderr, "Programming failed. Retrying... (%d)\n", retry);
> +                       goto do_retry;
>                 }
> +               fprintf(stderr, "Programming failed! Aborting...\n");
> +               goto out;
>         }
>
>         if ((sect_done * sect_size) == fw_size) {
> --
> 2.29.0
>
> -----Original Message-----
> From: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
> Sent: Tuesday, September 6, 2022 10:29 AM
> To: Matic, Bruno (Nokia - DE/Ulm) <bruno.matic@xxxxxxxxx>
> Cc: Avri Altman <Avri.Altman@xxxxxxx>; linux-mmc@xxxxxxxxxxxxxxx; Christian Löhle <CLoehle@xxxxxxxxxxxxxx>; Rossler, Jakob (Nokia - DE/Ulm) <jakob.rossler@xxxxxxxxx>; Heinonen, Aarne (Nokia - FI/Espoo) <aarne.heinonen@xxxxxxxxx>
> Subject: Re: [PATCH] mmc-utils: correct and clean up the file handling
>
> On Mon, 15 Aug 2022 at 15:11, Matic, Bruno (Nokia - DE/Ulm) <bruno.matic@xxxxxxxxx> wrote:
> >
> > Hi everyone,
> > As said, here is the reworked patch.
> >
> >
> > Add the check if the whole firmware was loaded.
> > Cleaned up the leftovers of handling the file in chunks.
> >
> > Signed-off-by: Bruno Matic <bruno.matic@xxxxxxxxx>
>
> Hi Bruno,
>
> Unfortunately, I was not able to apply this patch.
>
> $subject patch was not accepted by the mmc patchwork [1], which I am using to manage the patches. Please make sure to conform to the process of submitting patches [2] and run scripts/checkpatch.pl before re-submitting.
>
> Kind regards
> Uffe
>
> [1]
> https://patchwork.kernel.org/project/linux-mmc/list/
> [2]
> https://www.kernel.org/doc/html/latest/process/submitting-patches.html
>
> > ---
> >  mmc_cmds.c | 66
> > ++++++++++++++++++++++++++----------------------------
> >  1 file changed, 32 insertions(+), 34 deletions(-)
> >
> > diff --git a/mmc_cmds.c b/mmc_cmds.c
> > index 70480df..7d37e93 100644
> > --- a/mmc_cmds.c
> > +++ b/mmc_cmds.c
> > @@ -2812,7 +2812,6 @@ int do_ffu(int nargs, char **argv)
> >         __u8 *buf = NULL;
> >         __u32 arg;
> >         off_t fw_size;
> > -       ssize_t chunk_size;
> >         char *device;
> >         struct mmc_ioc_multi_cmd *multi_cmd = NULL;
> >         __u32 blocks = 1;
> > @@ -2925,45 +2924,44 @@ int do_ffu(int nargs, char **argv)
> >         multi_cmd->cmds[3].flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
> >         multi_cmd->cmds[3].write_flag = 1;
> >
> > -do_retry:
> > -       /* read firmware chunk */
> > +       /* read firmware */
> >         lseek(img_fd, 0, SEEK_SET);
> > -       chunk_size = read(img_fd, buf, fw_size);
> > +       if (read(img_fd, buf, fw_size) != fw_size) {
> > +               perror("Could not read the firmware file: ");
> > +               ret = -ENOSPC;
> > +               goto out;
> > +       }
> >
> > -       if (chunk_size > 0) {
> > -               /* send ioctl with multi-cmd */
> > -               ret = ioctl(dev_fd, MMC_IOC_MULTI_CMD, multi_cmd);
> > +do_retry:
> > +       /* send ioctl with multi-cmd */
> > +       ret = ioctl(dev_fd, MMC_IOC_MULTI_CMD, multi_cmd);
> >
> > -               if (ret) {
> > -                       perror("Multi-cmd ioctl");
> > -                       /* In case multi-cmd ioctl failed before exiting from ffu mode */
> > -                       ioctl(dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[3]);
> > -                       goto out;
> > -               }
> > +       if (ret) {
> > +               perror("Multi-cmd ioctl");
> > +               /* In case multi-cmd ioctl failed before exiting from ffu mode */
> > +               ioctl(dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[3]);
> > +               goto out;
> > +       }
> >
> > -               ret = read_extcsd(dev_fd, ext_csd);
> > -               if (ret) {
> > -                       fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
> > -                       goto out;
> > -               }
> > +       ret = read_extcsd(dev_fd, ext_csd);
> > +       if (ret) {
> > +               fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
> > +               goto out;
> > +       }
> >
> > -               /* Test if we need to restart the download */
> > -               sect_done = ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_0] |
> > -                               ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_1] << 8 |
> > -                               ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_2] << 16 |
> > -                               ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_3] << 24;
> > -               /* By spec, host should re-start download from the first sector if sect_done is 0 */
> > -               if (sect_done == 0) {
> > -                       if (retry > 0) {
> > -                               retry--;
> > -                               fprintf(stderr, "Programming failed. Retrying... (%d)\n", retry);
> > -                               goto do_retry;
> > -                       }
> > -                       fprintf(stderr, "Programming failed! Aborting...\n");
> > -                       goto out;
> > -               } else {
> > -                       fprintf(stderr, "Programmed %d/%jd bytes\r", sect_done * sect_size, (intmax_t)fw_size);
> > +       /* Test if we need to restart the download */
> > +       sect_done = ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_0] |
> > +                       ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_1] << 8 |
> > +                       ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_2] << 16 |
> > +                       ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_3] << 24;
> > +       /* By spec, host should re-start download from the first sector if sect_done is 0 */
> > +       if (sect_done == 0) {
> > +               if (retry--) {
> > +                       fprintf(stderr, "Programming failed. Retrying... (%d)\n", retry);
> > +                       goto do_retry;
> >                 }
> > +               fprintf(stderr, "Programming failed! Aborting...\n");
> > +               goto out;
> >         }
> >
> >         if ((sect_done * sect_size) == fw_size) {
> > --
> > 2.29.0
> >




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