FAILED: patch "[PATCH] tpm/tpm_i2c_atmel: Return -E2BIG when the transfer is" failed to apply to 4.19-stable tree

FAILED: patch "[PATCH] tpm/tpm_i2c_atmel: Return -E2BIG when the transfer is" failed to apply to 4.19-stable tree

[gregkh]

The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 442601e87a4769a8daba4976ec3afa5222ca211d Mon Sep 17 00:00:00 2001
From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Date: Fri, 8 Feb 2019 18:30:59 +0200
Subject: [PATCH] tpm/tpm_i2c_atmel: Return -E2BIG when the transfer is
 incomplete

Return -E2BIG when the transfer is incomplete. The upper layer does
not retry, so not doing that is incorrect behaviour.

Cc: stable@vger.kernel.org
Fixes: a2871c62e186 ("tpm: Add support for Atmel I2C TPMs")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>

diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c
index 32a8e27c5382..cc4e642d3180 100644
--- a/drivers/char/tpm/tpm_i2c_atmel.c
+++ b/drivers/char/tpm/tpm_i2c_atmel.c
@@ -69,6 +69,10 @@ static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len)
 	if (status < 0)
 		return status;
 
+	/* The upper layer does not support incomplete sends. */
+	if (status != len)
+		return -E2BIG;
+
 	return 0;
 }
 

Re: FAILED: patch "[PATCH] tpm/tpm_i2c_atmel: Return -E2BIG when the transfer is" failed to apply to 4.19-stable tree

[Jarkko Sakkinen]

On Thu, Mar 21, 2019 at 11:16:20AM +0100, gregkh@linuxfoundation.org wrote:
> 
> The patch below does not apply to the 4.19-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@vger.kernel.org>.
> 
> thanks,
> 
> greg k-h

Also for this:

$ git checkout v4.19.35
Previous HEAD position was 84df9525b0c2 Linux 4.19
HEAD is now at 4b0e041c9dad Linux 4.19.35

$ git am -3 ~/Desktop/0001-tpm-tpm_i2c_atmel-Return-E2BIG-when-the-transfer-is-.patch
Applying: tpm/tpm_i2c_atmel: Return -E2BIG when the transfer is incomplete

/Jarkko