diff options
Diffstat (limited to 'package/kernel/mac80211/patches/344-0002-brcmfmac-Limit-memory-allocs-to-64K.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/344-0002-brcmfmac-Limit-memory-allocs-to-64K.patch | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/344-0002-brcmfmac-Limit-memory-allocs-to-64K.patch b/package/kernel/mac80211/patches/344-0002-brcmfmac-Limit-memory-allocs-to-64K.patch new file mode 100644 index 0000000000..9c336f774f --- /dev/null +++ b/package/kernel/mac80211/patches/344-0002-brcmfmac-Limit-memory-allocs-to-64K.patch @@ -0,0 +1,127 @@ +From: Hante Meuleman <meuleman@broadcom.com> +Date: Wed, 17 Feb 2016 11:26:51 +0100 +Subject: [PATCH] brcmfmac: Limit memory allocs to <64K + +Some systems have problems with allocating memory allocation larger +then 64K. Often on unload/load or suspend/resume a failure is +reported: Could not allocate wiphy device. This patch makes the +escan intermediate storage buf dynamically allocated, and smaller +than 64K. + +Reviewed-by: Arend Van Spriel <arend@broadcom.com> +Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com> +Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> +Signed-off-by: Hante Meuleman <meuleman@broadcom.com> +Signed-off-by: Arend van Spriel <arend@broadcom.com> +Signed-off-by: Kalle Valo <kvalo@codeaurora.org> +--- + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +@@ -1125,7 +1125,7 @@ brcmf_cfg80211_escan(struct wiphy *wiphy + + /* Arm scan timeout timer */ + mod_timer(&cfg->escan_timeout, jiffies + +- WL_ESCAN_TIMER_INTERVAL_MS * HZ / 1000); ++ BRCMF_ESCAN_TIMER_INTERVAL_MS * HZ / 1000); + + return 0; + +@@ -3020,7 +3020,7 @@ brcmf_cfg80211_escan_handler(struct brcm + + list = (struct brcmf_scan_results *) + cfg->escan_info.escan_buf; +- if (bi_length > WL_ESCAN_BUF_SIZE - list->buflen) { ++ if (bi_length > BRCMF_ESCAN_BUF_SIZE - list->buflen) { + brcmf_err("Buffer is too small: ignoring\n"); + goto exit; + } +@@ -3033,8 +3033,8 @@ brcmf_cfg80211_escan_handler(struct brcm + bss_info_le)) + goto exit; + } +- memcpy(&(cfg->escan_info.escan_buf[list->buflen]), +- bss_info_le, bi_length); ++ memcpy(&cfg->escan_info.escan_buf[list->buflen], bss_info_le, ++ bi_length); + list->version = le32_to_cpu(bss_info_le->version); + list->buflen += bi_length; + list->count++; +@@ -5402,14 +5402,14 @@ static void brcmf_deinit_priv_mem(struct + { + kfree(cfg->conf); + cfg->conf = NULL; +- kfree(cfg->escan_ioctl_buf); +- cfg->escan_ioctl_buf = NULL; + kfree(cfg->extra_buf); + cfg->extra_buf = NULL; + kfree(cfg->wowl.nd); + cfg->wowl.nd = NULL; + kfree(cfg->wowl.nd_info); + cfg->wowl.nd_info = NULL; ++ kfree(cfg->escan_info.escan_buf); ++ cfg->escan_info.escan_buf = NULL; + } + + static s32 brcmf_init_priv_mem(struct brcmf_cfg80211_info *cfg) +@@ -5417,9 +5417,6 @@ static s32 brcmf_init_priv_mem(struct br + cfg->conf = kzalloc(sizeof(*cfg->conf), GFP_KERNEL); + if (!cfg->conf) + goto init_priv_mem_out; +- cfg->escan_ioctl_buf = kzalloc(BRCMF_DCMD_MEDLEN, GFP_KERNEL); +- if (!cfg->escan_ioctl_buf) +- goto init_priv_mem_out; + cfg->extra_buf = kzalloc(WL_EXTRA_BUF_MAX, GFP_KERNEL); + if (!cfg->extra_buf) + goto init_priv_mem_out; +@@ -5431,6 +5428,9 @@ static s32 brcmf_init_priv_mem(struct br + GFP_KERNEL); + if (!cfg->wowl.nd_info) + goto init_priv_mem_out; ++ cfg->escan_info.escan_buf = kzalloc(BRCMF_ESCAN_BUF_SIZE, GFP_KERNEL); ++ if (!cfg->escan_info.escan_buf) ++ goto init_priv_mem_out; + + return 0; + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h +@@ -28,8 +28,11 @@ + #define WL_ROAM_TRIGGER_LEVEL -75 + #define WL_ROAM_DELTA 20 + +-#define WL_ESCAN_BUF_SIZE (1024 * 64) +-#define WL_ESCAN_TIMER_INTERVAL_MS 10000 /* E-Scan timeout */ ++/* Keep BRCMF_ESCAN_BUF_SIZE below 64K (65536). Allocing over 64K can be ++ * problematic on some systems and should be avoided. ++ */ ++#define BRCMF_ESCAN_BUF_SIZE 65000 ++#define BRCMF_ESCAN_TIMER_INTERVAL_MS 10000 /* E-Scan timeout */ + + #define WL_ESCAN_ACTION_START 1 + #define WL_ESCAN_ACTION_CONTINUE 2 +@@ -205,7 +208,7 @@ enum wl_escan_state { + + struct escan_info { + u32 escan_state; +- u8 escan_buf[WL_ESCAN_BUF_SIZE]; ++ u8 *escan_buf; + struct wiphy *wiphy; + struct brcmf_if *ifp; + s32 (*run)(struct brcmf_cfg80211_info *cfg, struct brcmf_if *ifp, +@@ -278,7 +281,6 @@ struct brcmf_cfg80211_wowl { + * @escan_info: escan information. + * @escan_timeout: Timer for catch scan timeout. + * @escan_timeout_work: scan timeout worker. +- * @escan_ioctl_buf: dongle command buffer for escan commands. + * @vif_list: linked list of vif instances. + * @vif_cnt: number of vif instances. + * @vif_event: vif event signalling. +@@ -309,7 +311,6 @@ struct brcmf_cfg80211_info { + struct escan_info escan_info; + struct timer_list escan_timeout; + struct work_struct escan_timeout_work; +- u8 *escan_ioctl_buf; + struct list_head vif_list; + struct brcmf_cfg80211_vif_event vif_event; + struct completion vif_disabled; |