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Commit d56fbde3 authored by Akshay Pandit's avatar Akshay Pandit
Browse files

msm: ipa: Ignore empty ipa config file 



Change to handle empty ipa_config file being written to ipa device
during fw load. Log the event as low priority log.

Change-Id: I5db3a59de9a6c2912f03b1a21cc85eb4ef0be545
Signed-off-by: default avatarAkshay Pandit <pandit@codeaurora.org>
parent 0ce2ea25

drivers/platform/msm/ipa/ipa_v3/ipa.c

+13 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ 
#include <asm/cacheflush.h>

#include <linux/soc/qcom/smem_state.h>

#include <linux/of_irq.h>

#include <linux/ctype.h>



#ifdef CONFIG_ARM64
@@ -5968,6 +5969,7 @@ static ssize_t ipa3_write(struct file *file, const char __user *buf, 
	unsigned long missing;



	char dbg_buff[32] = { 0 };

	int i = 0;



	if (count >= sizeof(dbg_buff))

		return -EFAULT;
@@ -5988,6 +5990,17 @@ static ssize_t ipa3_write(struct file *file, const char __user *buf, 
	if (ipa3_is_ready())

		return count;



	/*Ignore empty ipa_config file*/

	for (i = 0 ; i < count ; ++i) {

		if (!isspace(dbg_buff[i]))

			break;

	}



	if (i == count) {

		IPADBG("Empty ipa_config file\n");

		return count;

	}



	/* Check MHI configuration on MDM devices */

	if (ipa3_ctx->platform_type == IPA_PLAT_TYPE_MDM) {