From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/drivers/mmc/core/sdio_io.c | 38 ++++++++++++++++++++++++--------------
1 files changed, 24 insertions(+), 14 deletions(-)
diff --git a/kernel/drivers/mmc/core/sdio_io.c b/kernel/drivers/mmc/core/sdio_io.c
index ed2d8c4..79dbf90 100644
--- a/kernel/drivers/mmc/core/sdio_io.c
+++ b/kernel/drivers/mmc/core/sdio_io.c
@@ -1,15 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* linux/drivers/mmc/core/sdio_io.c
*
* Copyright 2007-2008 Pierre Ossman
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
*/
#include <linux/export.h>
+#include <linux/kernel.h>
#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
#include <linux/mmc/sdio.h>
@@ -136,7 +133,7 @@
err:
pr_debug("SDIO: Failed to disable device %s\n", sdio_func_id(func));
- return -EIO;
+ return ret;
}
EXPORT_SYMBOL_GPL(sdio_disable_func);
@@ -204,6 +201,21 @@
return min(mval, 512u); /* maximum size for byte mode */
}
+/*
+ * This is legacy code, which needs to be re-worked some day. Basically we need
+ * to take into account the properties of the host, as to enable the SDIO func
+ * driver layer to allocate optimal buffers.
+ */
+static inline unsigned int _sdio_align_size(unsigned int sz)
+{
+ /*
+ * FIXME: We don't have a system for the controller to tell
+ * the core about its problems yet, so for now we just 32-bit
+ * align the size.
+ */
+ return ALIGN(sz, 4);
+}
+
/**
* sdio_align_size - pads a transfer size to a more optimal value
* @func: SDIO function
@@ -231,7 +243,7 @@
* wants to increase the size up to a point where it
* might need more than one block.
*/
- sz = mmc_align_data_size(func->card, sz);
+ sz = _sdio_align_size(sz);
/*
* If we can still do this with just a byte transfer, then
@@ -253,7 +265,7 @@
*/
blk_sz = ((sz + func->cur_blksize - 1) /
func->cur_blksize) * func->cur_blksize;
- blk_sz = mmc_align_data_size(func->card, blk_sz);
+ blk_sz = _sdio_align_size(blk_sz);
/*
* This value is only good if it is still just
@@ -266,8 +278,7 @@
* We failed to do one request, but at least try to
* pad the remainder properly.
*/
- byte_sz = mmc_align_data_size(func->card,
- sz % func->cur_blksize);
+ byte_sz = _sdio_align_size(sz % func->cur_blksize);
if (byte_sz <= sdio_max_byte_size(func)) {
blk_sz = sz / func->cur_blksize;
return blk_sz * func->cur_blksize + byte_sz;
@@ -277,16 +288,14 @@
* We need multiple requests, so first check that the
* controller can handle the chunk size;
*/
- chunk_sz = mmc_align_data_size(func->card,
- sdio_max_byte_size(func));
+ chunk_sz = _sdio_align_size(sdio_max_byte_size(func));
if (chunk_sz == sdio_max_byte_size(func)) {
/*
* Fix up the size of the remainder (if any)
*/
byte_sz = orig_sz % chunk_sz;
if (byte_sz) {
- byte_sz = mmc_align_data_size(func->card,
- byte_sz);
+ byte_sz = _sdio_align_size(byte_sz);
}
return (orig_sz / chunk_sz) * chunk_sz + byte_sz;
@@ -700,6 +709,7 @@
/**
* sdio_set_host_pm_flags - set wanted host power management capabilities
* @func: SDIO function attached to host
+ * @flags: Power Management flags to set
*
* Set a capability bitmask corresponding to wanted host controller
* power management features for the upcoming suspend state.
--
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