PrawnOS-nonfree/kernel/patches/kernel/Added-a-second-reset-when-having-an-issue-reading-th.patch

From 30914ed56a766f15162c3bf106797a45857d98f1 Mon Sep 17 00:00:00 2001
From: SolidHal <hal@halemmerich.com>
Date: Sun, 21 Oct 2018 16:40:15 -0500
Subject: [PATCH] Added a second reset when having an issue reading the emmc.

The c201 emmc can be... touchy. Sometimes one full reset isn't
enough to get it into a wokring state if it found it's way into
a really bad state. Note that in my testing WITHOUT this patch,
this only happens about once in just over 1600 reboots.

Signed-off-by: SolidHal <hal@halemmerich.com>
---
 drivers/mmc/core/block.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 5bc585e8..39e16e48 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -1033,6 +1033,7 @@ static int mmc_blk_reset(struct mmc_blk_data *md, struct mmc_host *host,
 		return -EEXIST;
   }
 	md->reset_done |= type;
+retry:
 	err = mmc_hw_reset(host);
 	/* Ensure we switch back to the correct partition */
 	if (err != -EOPNOTSUPP) {
@@ -1050,6 +1051,10 @@ static int mmc_blk_reset(struct mmc_blk_data *md, struct mmc_host *host,
 			return -ENODEV;
 		}
 	}
+  if (err){
+    /* Try one last time, just in case. The emmc can be touchy */
+    goto retry;
+  }
 	return err;
 }
 
-- 
2.11.0