diff options
| -rw-r--r-- | target/linux/ipq806x/patches-4.4/308-soc-qcom-ipq806x-Increase-Atomic-Coherent-Pool-size.patch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.4/308-soc-qcom-ipq806x-Increase-Atomic-Coherent-Pool-size.patch b/target/linux/ipq806x/patches-4.4/308-soc-qcom-ipq806x-Increase-Atomic-Coherent-Pool-size.patch new file mode 100644 index 0000000000..1c997ab256 --- /dev/null +++ b/target/linux/ipq806x/patches-4.4/308-soc-qcom-ipq806x-Increase-Atomic-Coherent-Pool-size.patch @@ -0,0 +1,52 @@ +From 689a8f1ec58a88152669d21572a1539ad34024cb Mon Sep 17 00:00:00 2001 +From: Varadarajan Narayanan <varada@codeaurora.org> +Date: Mon, 30 Mar 2015 13:25:21 +0530 +Subject: soc: qcom: ipq806x: Increase Atomic Coherent Pool size + +Linux 3.14, by default allocates a 256K Atomic Coherent Pool. +However, Linux 3.4 seems to have allocated ~1.8M for the same. +256K doesn't seem to be enough for the WiFi driver. Hence, +setting the size to be similar to 3.4. + +CRs-Fixed: 810357 + +Change-Id: I5b98a8531dcb33aff451a943f8b83402f9d13fa7 +Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org> +--- + arch/arm/mach-qcom/board.c | 20 ++++++++++++++++++++ + 1 file changed, 20 insertions(+) + +--- a/arch/arm/mach-qcom/board.c ++++ b/arch/arm/mach-qcom/board.c +@@ -12,6 +12,11 @@ + + #include <linux/init.h> + ++#include <linux/err.h> ++#include <linux/io.h> ++#include <linux/module.h> ++#include <linux/dma-mapping.h> ++ + #include <asm/mach/arch.h> + + static const char * const qcom_dt_match[] __initconst = { +@@ -28,3 +33,19 @@ static const char * const qcom_dt_match[ + DT_MACHINE_START(QCOM_DT, "Qualcomm (Flattened Device Tree)") + .dt_compat = qcom_dt_match, + MACHINE_END ++ ++ ++static int __init qcom_atomic_pool_size_set(void) ++{ ++#define ATOMIC_DMA_COHERENT_POOL_SIZE SZ_2M ++ ++ init_dma_coherent_pool_size(ATOMIC_DMA_COHERENT_POOL_SIZE); ++ ++ return 0; ++} ++ ++/* ++ * This should happen before atomic_pool_init(), which is a ++ * postcore_initcall. ++ */ ++core_initcall(qcom_atomic_pool_size_set); |