mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 18:19:02 +00:00
cddd459140
Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release which was tagged LSDK-20.04-V5.4. https://source.codeaurora.org/external/qoriq/qoriq-components/linux/ For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in LSDK, port the dts patches from 4.14. The patches are sorted into the following categories: 301-arch-xxxx 302-dts-xxxx 303-core-xxxx 701-net-xxxx 801-audio-xxxx 802-can-xxxx 803-clock-xxxx 804-crypto-xxxx 805-display-xxxx 806-dma-xxxx 807-gpio-xxxx 808-i2c-xxxx 809-jailhouse-xxxx 810-keys-xxxx 811-kvm-xxxx 812-pcie-xxxx 813-pm-xxxx 814-qe-xxxx 815-sata-xxxx 816-sdhc-xxxx 817-spi-xxxx 818-thermal-xxxx 819-uart-xxxx 820-usb-xxxx 821-vfio-xxxx Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
78 lines
2.6 KiB
Diff
78 lines
2.6 KiB
Diff
From 13d8031dd480b23620923c39400831f7edc68276 Mon Sep 17 00:00:00 2001
|
|
From: Robin Gong <yibin.gong@nxp.com>
|
|
Date: Thu, 10 May 2018 01:02:01 +0800
|
|
Subject: [PATCH] MLK-18248: dma: fsl-edma-v3: avoid touch unused edma channel
|
|
|
|
Avoid touch unused edma channel register in susped/resume, otherwise,
|
|
kernel crash if XRDC enabled in scfw.
|
|
|
|
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
|
|
Acked-by: Fugang Duan <fugang.duan@nxp.com>
|
|
(cherry picked from commit aa221c4aba34c6ce1ce5f561fa073bb8297cc0ff)
|
|
---
|
|
drivers/dma/fsl-edma-v3.c | 11 +++++++++++
|
|
1 file changed, 11 insertions(+)
|
|
|
|
--- a/drivers/dma/fsl-edma-v3.c
|
|
+++ b/drivers/dma/fsl-edma-v3.c
|
|
@@ -149,6 +149,7 @@ struct fsl_edma3_chan {
|
|
enum dma_status status;
|
|
enum fsl_edma3_pm_state pm_state;
|
|
bool idle;
|
|
+ bool used;
|
|
struct fsl_edma3_engine *edma3;
|
|
struct fsl_edma3_desc *edesc;
|
|
struct fsl_edma3_slave_config fsc;
|
|
@@ -226,6 +227,8 @@ static void fsl_edma3_enable_request(str
|
|
|
|
val |= EDMA_CH_CSR_ERQ;
|
|
writel(val, addr + EDMA_CH_CSR);
|
|
+
|
|
+ fsl_chan->used = true;
|
|
}
|
|
|
|
static void fsl_edma3_disable_request(struct fsl_edma3_chan *fsl_chan)
|
|
@@ -281,6 +284,7 @@ static int fsl_edma3_terminate_all(struc
|
|
fsl_edma3_disable_request(fsl_chan);
|
|
fsl_chan->edesc = NULL;
|
|
fsl_chan->idle = true;
|
|
+ fsl_chan->used = false;
|
|
vchan_get_all_descriptors(&fsl_chan->vchan, &head);
|
|
spin_unlock_irqrestore(&fsl_chan->vchan.lock, flags);
|
|
vchan_dma_desc_free_list(&fsl_chan->vchan, &head);
|
|
@@ -805,6 +809,7 @@ static void fsl_edma3_free_chan_resource
|
|
vchan_dma_desc_free_list(&fsl_chan->vchan, &head);
|
|
dma_pool_destroy(fsl_chan->tcd_pool);
|
|
fsl_chan->tcd_pool = NULL;
|
|
+ fsl_chan->used = false;
|
|
}
|
|
|
|
static int fsl_edma3_probe(struct platform_device *pdev)
|
|
@@ -900,6 +905,7 @@ static int fsl_edma3_probe(struct platfo
|
|
|
|
fsl_chan->vchan.desc_free = fsl_edma3_free_desc;
|
|
vchan_init(&fsl_chan->vchan, &fsl_edma3->dma_dev);
|
|
+ fsl_chan->used = false;
|
|
}
|
|
|
|
mutex_init(&fsl_edma3->fsl_edma3_mutex);
|
|
@@ -969,6 +975,8 @@ static int fsl_edma3_suspend_late(struct
|
|
fsl_chan = &fsl_edma->chans[i];
|
|
addr = fsl_chan->membase;
|
|
|
|
+ if (!fsl_chan->used)
|
|
+ continue;
|
|
spin_lock_irqsave(&fsl_chan->vchan.lock, flags);
|
|
fsl_edma->edma_regs[i].csr = readl(addr + EDMA_CH_CSR);
|
|
fsl_edma->edma_regs[i].sbr = readl(addr + EDMA_CH_SBR);
|
|
@@ -996,6 +1004,9 @@ static int fsl_edma3_resume_early(struct
|
|
fsl_chan = &fsl_edma->chans[i];
|
|
addr = fsl_chan->membase;
|
|
|
|
+ if (!fsl_chan->used)
|
|
+ continue;
|
|
+
|
|
spin_lock_irqsave(&fsl_chan->vchan.lock, flags);
|
|
writel(fsl_edma->edma_regs[i].csr, addr + EDMA_CH_CSR);
|
|
writel(fsl_edma->edma_regs[i].sbr, addr + EDMA_CH_SBR);
|