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/arch/mips/include/asm/dma-coherence.h | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/kernel/arch/mips/include/asm/dma-coherence.h b/kernel/arch/mips/include/asm/dma-coherence.h
index 8eda487..5eaa1fc 100644
--- a/kernel/arch/mips/include/asm/dma-coherence.h
+++ b/kernel/arch/mips/include/asm/dma-coherence.h
@@ -20,6 +20,12 @@
#elif defined(CONFIG_DMA_MAYBE_COHERENT)
extern enum coherent_io_user_state coherentio;
extern int hw_coherentio;
+
+static inline bool dev_is_dma_coherent(struct device *dev)
+{
+ return coherentio == IO_COHERENCE_ENABLED ||
+ (coherentio == IO_COHERENCE_DEFAULT && hw_coherentio);
+}
#else
#ifdef CONFIG_DMA_NONCOHERENT
#define coherentio IO_COHERENCE_DISABLED
--
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