[PATCH] tpm: loongson: Add bufsiz parameter to tpm_loongson_send()

[PATCH] tpm: loongson: Add bufsiz parameter to tpm_loongson_send()

[Nathan Chancellor]

Commit 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device") has a
semantic conflict with commit 07d8004d6fb9 ("tpm: add bufsiz parameter
in the .send callback"), as the former change was developed against a
tree without the latter change. This results in a build error:

  drivers/char/tpm/tpm_loongson.c:48:17: error: initialization of 'int (*)(struct tpm_chip *, u8 *, size_t,  size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int,  long unsigned int)'} from incompatible pointer type 'int (*)(struct tpm_chip *, u8 *, size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int)'} [-Wincompatible-pointer-types]
     48 |         .send = tpm_loongson_send,
        |                 ^~~~~~~~~~~~~~~~~
  drivers/char/tpm/tpm_loongson.c:48:17: note: (near initialization for 'tpm_loongson_ops.send')
  drivers/char/tpm/tpm_loongson.c:31:12: note: 'tpm_loongson_send' declared here
     31 | static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t count)
        |            ^~~~~~~~~~~~~~~~~

Add the expected bufsiz parameter to tpm_loongson_send() to resolve the
error.

Fixes: 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
This is in Lee's ib-mfd-char-crypto-6.18 [1] so he will need to take it
but I have CC'd the TPM folks as an FYI.

[1]: https://lore.kernel.org/20250902124205.GL2163762@google.com/
---
 drivers/char/tpm/tpm_loongson.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/tpm/tpm_loongson.c b/drivers/char/tpm/tpm_loongson.c
index a4ec23639911..9e50250763d1 100644
--- a/drivers/char/tpm/tpm_loongson.c
+++ b/drivers/char/tpm/tpm_loongson.c
@@ -28,7 +28,7 @@ static int tpm_loongson_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 	return cmd_ret->data_len;
 }
 
-static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t count)
+static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, size_t count)
 {
 	struct loongson_se_engine *tpm_engine = dev_get_drvdata(&chip->dev);
 	struct tpm_loongson_cmd *cmd = tpm_engine->command;

---
base-commit: 74fddd5fbab879a7d039d9fb49af923927a64811
change-id: 20250917-tpm-loongson-add-bufsiz-e43f60016cca

Best regards,
--  
Nathan Chancellor <nathan@kernel.org>

Re: [PATCH] tpm: loongson: Add bufsiz parameter to tpm_loongson_send()

[Qunqin Zhao]

在 2025/9/18 上午1:09, Nathan Chancellor 写道:
> Commit 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device") has a
> semantic conflict with commit 07d8004d6fb9 ("tpm: add bufsiz parameter
> in the .send callback"), as the former change was developed against a
> tree without the latter change. This results in a build error:
>
>    drivers/char/tpm/tpm_loongson.c:48:17: error: initialization of 'int (*)(struct tpm_chip *, u8 *, size_t,  size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int,  long unsigned int)'} from incompatible pointer type 'int (*)(struct tpm_chip *, u8 *, size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int)'} [-Wincompatible-pointer-types]
>       48 |         .send = tpm_loongson_send,
>          |                 ^~~~~~~~~~~~~~~~~
>    drivers/char/tpm/tpm_loongson.c:48:17: note: (near initialization for 'tpm_loongson_ops.send')
>    drivers/char/tpm/tpm_loongson.c:31:12: note: 'tpm_loongson_send' declared here
>       31 | static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t count)
>          |            ^~~~~~~~~~~~~~~~~
>
> Add the expected bufsiz parameter to tpm_loongson_send() to resolve the
> error.

This means a lot. Thanks

Best regards,

Qunqin.

>
> Fixes: 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device")
> Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> ---
> This is in Lee's ib-mfd-char-crypto-6.18 [1] so he will need to take it
> but I have CC'd the TPM folks as an FYI.
>
> [1]: https://lore.kernel.org/20250902124205.GL2163762@google.com/
> ---
>   drivers/char/tpm/tpm_loongson.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/char/tpm/tpm_loongson.c b/drivers/char/tpm/tpm_loongson.c
> index a4ec23639911..9e50250763d1 100644
> --- a/drivers/char/tpm/tpm_loongson.c
> +++ b/drivers/char/tpm/tpm_loongson.c
> @@ -28,7 +28,7 @@ static int tpm_loongson_recv(struct tpm_chip *chip, u8 *buf, size_t count)
>   	return cmd_ret->data_len;
>   }
>   
> -static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t count)
> +static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, size_t count)
>   {
>   	struct loongson_se_engine *tpm_engine = dev_get_drvdata(&chip->dev);
>   	struct tpm_loongson_cmd *cmd = tpm_engine->command;
>
> ---
> base-commit: 74fddd5fbab879a7d039d9fb49af923927a64811
> change-id: 20250917-tpm-loongson-add-bufsiz-e43f60016cca
>
> Best regards,
> --
> Nathan Chancellor <nathan@kernel.org>
>

Re: [PATCH] tpm: loongson: Add bufsiz parameter to tpm_loongson_send()

[Jarkko Sakkinen]

On Wed, Sep 17, 2025 at 10:09:00AM -0700, Nathan Chancellor wrote:
> Commit 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device") has a
> semantic conflict with commit 07d8004d6fb9 ("tpm: add bufsiz parameter
> in the .send callback"), as the former change was developed against a
> tree without the latter change. This results in a build error:
> 
>   drivers/char/tpm/tpm_loongson.c:48:17: error: initialization of 'int (*)(struct tpm_chip *, u8 *, size_t,  size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int,  long unsigned int)'} from incompatible pointer type 'int (*)(struct tpm_chip *, u8 *, size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int)'} [-Wincompatible-pointer-types]
>      48 |         .send = tpm_loongson_send,
>         |                 ^~~~~~~~~~~~~~~~~
>   drivers/char/tpm/tpm_loongson.c:48:17: note: (near initialization for 'tpm_loongson_ops.send')
>   drivers/char/tpm/tpm_loongson.c:31:12: note: 'tpm_loongson_send' declared here
>      31 | static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t count)
>         |            ^~~~~~~~~~~~~~~~~
> 
> Add the expected bufsiz parameter to tpm_loongson_send() to resolve the
> error.
> 
> Fixes: 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device")
> Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> ---
> This is in Lee's ib-mfd-char-crypto-6.18 [1] so he will need to take it
> but I have CC'd the TPM folks as an FYI.
> 
> [1]: https://lore.kernel.org/20250902124205.GL2163762@google.com/
> ---
>  drivers/char/tpm/tpm_loongson.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/char/tpm/tpm_loongson.c b/drivers/char/tpm/tpm_loongson.c
> index a4ec23639911..9e50250763d1 100644
> --- a/drivers/char/tpm/tpm_loongson.c
> +++ b/drivers/char/tpm/tpm_loongson.c
> @@ -28,7 +28,7 @@ static int tpm_loongson_recv(struct tpm_chip *chip, u8 *buf, size_t count)
>  	return cmd_ret->data_len;
>  }
>  
> -static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t count)
> +static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, size_t count)
>  {
>  	struct loongson_se_engine *tpm_engine = dev_get_drvdata(&chip->dev);
>  	struct tpm_loongson_cmd *cmd = tpm_engine->command;
> 
> ---
> base-commit: 74fddd5fbab879a7d039d9fb49af923927a64811
> change-id: 20250917-tpm-loongson-add-bufsiz-e43f60016cca
> 
> Best regards,
> --  
> Nathan Chancellor <nathan@kernel.org>
> 

Thank you I applied and it's still in time for first 6.18 PR.

BR, Jarkko

Re: [PATCH] tpm: loongson: Add bufsiz parameter to tpm_loongson_send()

[Jarkko Sakkinen]

On Thu, Sep 18, 2025 at 06:56:23PM +0300, Jarkko Sakkinen wrote:
> On Wed, Sep 17, 2025 at 10:09:00AM -0700, Nathan Chancellor wrote:
> > Commit 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device") has a
> > semantic conflict with commit 07d8004d6fb9 ("tpm: add bufsiz parameter
> > in the .send callback"), as the former change was developed against a
> > tree without the latter change. This results in a build error:
> > 
> >   drivers/char/tpm/tpm_loongson.c:48:17: error: initialization of 'int (*)(struct tpm_chip *, u8 *, size_t,  size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int,  long unsigned int)'} from incompatible pointer type 'int (*)(struct tpm_chip *, u8 *, size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int)'} [-Wincompatible-pointer-types]
> >      48 |         .send = tpm_loongson_send,
> >         |                 ^~~~~~~~~~~~~~~~~
> >   drivers/char/tpm/tpm_loongson.c:48:17: note: (near initialization for 'tpm_loongson_ops.send')
> >   drivers/char/tpm/tpm_loongson.c:31:12: note: 'tpm_loongson_send' declared here
> >      31 | static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t count)
> >         |            ^~~~~~~~~~~~~~~~~
> > 
> > Add the expected bufsiz parameter to tpm_loongson_send() to resolve the
> > error.
> > 
> > Fixes: 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device")
> > Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> > ---
> > This is in Lee's ib-mfd-char-crypto-6.18 [1] so he will need to take it
> > but I have CC'd the TPM folks as an FYI.
> > 
> > [1]: https://lore.kernel.org/20250902124205.GL2163762@google.com/
> > ---
> >  drivers/char/tpm/tpm_loongson.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/char/tpm/tpm_loongson.c b/drivers/char/tpm/tpm_loongson.c
> > index a4ec23639911..9e50250763d1 100644
> > --- a/drivers/char/tpm/tpm_loongson.c
> > +++ b/drivers/char/tpm/tpm_loongson.c
> > @@ -28,7 +28,7 @@ static int tpm_loongson_recv(struct tpm_chip *chip, u8 *buf, size_t count)
> >  	return cmd_ret->data_len;
> >  }
> >  
> > -static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t count)
> > +static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, size_t count)
> >  {
> >  	struct loongson_se_engine *tpm_engine = dev_get_drvdata(&chip->dev);
> >  	struct tpm_loongson_cmd *cmd = tpm_engine->command;
> > 
> > ---
> > base-commit: 74fddd5fbab879a7d039d9fb49af923927a64811
> > change-id: 20250917-tpm-loongson-add-bufsiz-e43f60016cca
> > 
> > Best regards,
> > --  
> > Nathan Chancellor <nathan@kernel.org>
> > 
> 
> Thank you I applied and it's still in time for first 6.18 PR.

Oops, sorry this is also better to be cycled through looongson tree
instead of mine, anyhow:

Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>

BR, Jarkko

Re: (subset) [PATCH] tpm: loongson: Add bufsiz parameter to tpm_loongson_send()

[Lee Jones]

On Wed, 17 Sep 2025 10:09:00 -0700, Nathan Chancellor wrote:
> Commit 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device") has a
> semantic conflict with commit 07d8004d6fb9 ("tpm: add bufsiz parameter
> in the .send callback"), as the former change was developed against a
> tree without the latter change. This results in a build error:
> 
>   drivers/char/tpm/tpm_loongson.c:48:17: error: initialization of 'int (*)(struct tpm_chip *, u8 *, size_t,  size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int,  long unsigned int)'} from incompatible pointer type 'int (*)(struct tpm_chip *, u8 *, size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int)'} [-Wincompatible-pointer-types]
>      48 |         .send = tpm_loongson_send,
>         |                 ^~~~~~~~~~~~~~~~~
>   drivers/char/tpm/tpm_loongson.c:48:17: note: (near initialization for 'tpm_loongson_ops.send')
>   drivers/char/tpm/tpm_loongson.c:31:12: note: 'tpm_loongson_send' declared here
>      31 | static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t count)
>         |            ^~~~~~~~~~~~~~~~~
> 
> [...]

Applied, thanks!

[1/1] tpm: loongson: Add bufsiz parameter to tpm_loongson_send()
      commit: 39377467669197b02479798f49e3f19344155dc9

--
Lee Jones [李琼斯]

Re: (subset) [PATCH] tpm: loongson: Add bufsiz parameter to tpm_loongson_send()

[Lee Jones]

On Thu, 25 Sep 2025, Lee Jones wrote:

> On Wed, 17 Sep 2025 10:09:00 -0700, Nathan Chancellor wrote:
> > Commit 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device") has a
> > semantic conflict with commit 07d8004d6fb9 ("tpm: add bufsiz parameter
> > in the .send callback"), as the former change was developed against a
> > tree without the latter change. This results in a build error:
> > 
> >   drivers/char/tpm/tpm_loongson.c:48:17: error: initialization of 'int (*)(struct tpm_chip *, u8 *, size_t,  size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int,  long unsigned int)'} from incompatible pointer type 'int (*)(struct tpm_chip *, u8 *, size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int)'} [-Wincompatible-pointer-types]
> >      48 |         .send = tpm_loongson_send,
> >         |                 ^~~~~~~~~~~~~~~~~
> >   drivers/char/tpm/tpm_loongson.c:48:17: note: (near initialization for 'tpm_loongson_ops.send')
> >   drivers/char/tpm/tpm_loongson.c:31:12: note: 'tpm_loongson_send' declared here
> >      31 | static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t count)
> >         |            ^~~~~~~~~~~~~~~~~
> > 
> > [...]
> 
> Applied, thanks!
> 
> [1/1] tpm: loongson: Add bufsiz parameter to tpm_loongson_send()
>       commit: 39377467669197b02479798f49e3f19344155dc9

Send for testing.

Will follow-up on the PR once complete.

-- 
Lee Jones [李琼斯]