mwifiex: dynamically increase preallocated firmware dump memory size

This patch increase firmware dump memory 4K each time, until
meet the demand.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/marvell/mwifiex/decl.h b/drivers/net/wireless/marvell/mwifiex/decl.h
index c744a70..a184f9f 100644 (file)
--- a/drivers/net/wireless/marvell/mwifiex/decl.h
+++ b/drivers/net/wireless/marvell/mwifiex/decl.h
@@ -122,6 +122,8 @@
 #define BLOCK_NUMBER_OFFSET            15
 #define SDIO_HEADER_OFFSET             28
 
+#define MWIFIEX_SIZE_4K 0x4000
+
 enum mwifiex_bss_type {
        MWIFIEX_BSS_TYPE_STA = 0,
        MWIFIEX_BSS_TYPE_UAP = 1,

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index c94d31e..a62a09b 100644 (file)
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -2402,7 +2402,8 @@ static void mwifiex_pcie_fw_dump(struct mwifiex_adapter *adapter)
        struct pcie_service_card *card = adapter->card;
        const struct mwifiex_pcie_card_reg *creg = card->pcie.reg;
        unsigned int reg, reg_start, reg_end;
-       u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
+       u8 *dbg_ptr, *end_ptr, *tmp_ptr, dump_num;
+       u8 idx, i, read_reg, doneflag = 0;
        enum rdwr_status stat;
        u32 memory_size;
        int ret;
@@ -2485,11 +2486,21 @@ static void mwifiex_pcie_fw_dump(struct mwifiex_adapter *adapter)
                                mwifiex_read_reg_byte(adapter, reg, dbg_ptr);
                                if (dbg_ptr < end_ptr) {
                                        dbg_ptr++;
-                               } else {
-                                       mwifiex_dbg(adapter, ERROR,
-                                                   "Allocated buf not enough\n");
-                                       return;
+                                       continue;
                                }
+                               mwifiex_dbg(adapter, ERROR,
+                                           "pre-allocated buf not enough\n");
+                               tmp_ptr =
+                                       vzalloc(memory_size + MWIFIEX_SIZE_4K);
+                               if (!tmp_ptr)
+                                       return;
+                               memcpy(tmp_ptr, entry->mem_ptr, memory_size);
+                               vfree(entry->mem_ptr);
+                               entry->mem_ptr = tmp_ptr;
+                               tmp_ptr = NULL;
+                               dbg_ptr = entry->mem_ptr + memory_size;
+                               memory_size += MWIFIEX_SIZE_4K;
+                               end_ptr = entry->mem_ptr + memory_size;
                        }
 
                        if (stat != RDWR_STATUS_DONE)