mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
71 lines
2.6 KiB
Diff
71 lines
2.6 KiB
Diff
|
From 19682239a60c1b53cad8319eaeb58e71d4213cee Mon Sep 17 00:00:00 2001
|
||
|
|
From: Jonathan Bell <jonathan@raspberrypi.com>
|
||
|
|
Date: Mon, 15 Jul 2024 13:38:38 +0100
|
||
|
|
Subject: [PATCH 1168/1215] fixup: mmc: restrict posted write counts for SD
|
||
|
|
cards in CQ mode
|
||
|
|
|
||
|
|
Leaving card->max_posted_writes unintialised was a bad thing to do.
|
||
|
|
|
||
|
|
Also, cqe_enable is 1 if hsq is enabled as hsq substitutes the cqhci
|
||
|
|
implementation with its own.
|
||
|
|
|
||
|
|
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
|
||
|
|
---
|
||
|
|
drivers/mmc/core/mmc.c | 1 +
|
||
|
|
drivers/mmc/core/queue.c | 2 +-
|
||
|
|
drivers/mmc/core/sd.c | 14 ++++++++------
|
||
|
|
3 files changed, 10 insertions(+), 7 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/mmc/core/mmc.c
|
||
|
|
+++ b/drivers/mmc/core/mmc.c
|
||
|
|
@@ -1663,6 +1663,7 @@ static int mmc_init_card(struct mmc_host
|
||
|
|
card->ocr = ocr;
|
||
|
|
card->type = MMC_TYPE_MMC;
|
||
|
|
card->rca = 1;
|
||
|
|
+ card->max_posted_writes = 1;
|
||
|
|
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
|
||
|
|
}
|
||
|
|
|
||
|
|
--- a/drivers/mmc/core/queue.c
|
||
|
|
+++ b/drivers/mmc/core/queue.c
|
||
|
|
@@ -268,7 +268,7 @@ static blk_status_t mmc_mq_queue_rq(stru
|
||
|
|
spin_unlock_irq(&mq->lock);
|
||
|
|
return BLK_STS_RESOURCE;
|
||
|
|
}
|
||
|
|
- if (host->cqe_enabled && req_op(req) == REQ_OP_WRITE &&
|
||
|
|
+ if (!host->hsq_enabled && host->cqe_enabled && req_op(req) == REQ_OP_WRITE &&
|
||
|
|
mq->pending_writes >= card->max_posted_writes) {
|
||
|
|
spin_unlock_irq(&mq->lock);
|
||
|
|
return BLK_STS_RESOURCE;
|
||
|
|
--- a/drivers/mmc/core/sd.c
|
||
|
|
+++ b/drivers/mmc/core/sd.c
|
||
|
|
@@ -1105,13 +1105,14 @@ static int sd_parse_ext_reg_perf(struct
|
||
|
|
mmc_hostname(card->host),
|
||
|
|
card->ext_csd.cmdq_depth);
|
||
|
|
/*
|
||
|
|
- * If CQ is enabled, there is a contract between host and card such that VDD will
|
||
|
|
- * be maintained and removed only if a power off notification is provided.
|
||
|
|
- * An SD card in an accessible slot means surprise removal is a possibility.
|
||
|
|
- * As a middle ground, limit max posted writes to 1 unless the card is "hardwired".
|
||
|
|
+ * If CQ is enabled, there is a contract between host and card such that
|
||
|
|
+ * VDD will be maintained and removed only if a power off notification
|
||
|
|
+ * is provided. An SD card in an accessible slot means surprise removal
|
||
|
|
+ * is a possibility. As a middle ground, keep the default maximum of 1
|
||
|
|
+ * posted write unless the card is "hardwired".
|
||
|
|
*/
|
||
|
|
- if (mmc_card_is_removable(card->host))
|
||
|
|
- card->max_posted_writes = 1;
|
||
|
|
+ if (!mmc_card_is_removable(card->host))
|
||
|
|
+ card->max_posted_writes = card->ext_csd.cmdq_depth;
|
||
|
|
}
|
||
|
|
|
||
|
|
card->ext_perf.fno = fno;
|
||
|
|
@@ -1383,6 +1384,7 @@ retry:
|
||
|
|
|
||
|
|
card->ocr = ocr;
|
||
|
|
card->type = MMC_TYPE_SD;
|
||
|
|
+ card->max_posted_writes = 1;
|
||
|
|
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
|
||
|
|
}
|
||
|
|
|