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path: root/drivers/net/wireless/b43
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Diffstat (limited to 'drivers/net/wireless/b43')
-rw-r--r--drivers/net/wireless/b43/b43.h5
-rw-r--r--drivers/net/wireless/b43/main.c54
-rw-r--r--drivers/net/wireless/b43/main.h5
3 files changed, 48 insertions, 16 deletions
diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
index b298e5d68be..10e288d470e 100644
--- a/drivers/net/wireless/b43/b43.h
+++ b/drivers/net/wireless/b43/b43.h
@@ -7,6 +7,7 @@
#include <linux/hw_random.h>
#include <linux/bcma/bcma.h>
#include <linux/ssb/ssb.h>
+#include <linux/completion.h>
#include <net/mac80211.h>
#include "debugfs.h"
@@ -722,6 +723,10 @@ enum b43_firmware_file_type {
struct b43_request_fw_context {
/* The device we are requesting the fw for. */
struct b43_wldev *dev;
+ /* a completion event structure needed if this call is asynchronous */
+ struct completion fw_load_complete;
+ /* a pointer to the firmware object */
+ const struct firmware *blob;
/* The type of firmware to request. */
enum b43_firmware_file_type req_type;
/* Error messages for each firmware type. */
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 16ab280359b..806e34c1928 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -2088,11 +2088,18 @@ static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
b43warn(wl, text);
}
+static void b43_fw_cb(const struct firmware *firmware, void *context)
+{
+ struct b43_request_fw_context *ctx = context;
+
+ ctx->blob = firmware;
+ complete(&ctx->fw_load_complete);
+}
+
int b43_do_request_fw(struct b43_request_fw_context *ctx,
const char *name,
- struct b43_firmware_file *fw)
+ struct b43_firmware_file *fw, bool async)
{
- const struct firmware *blob;
struct b43_fw_header *hdr;
u32 size;
int err;
@@ -2131,11 +2138,31 @@ int b43_do_request_fw(struct b43_request_fw_context *ctx,
B43_WARN_ON(1);
return -ENOSYS;
}
- err = request_firmware(&blob, ctx->fwname, ctx->dev->dev->dev);
+ if (async) {
+ /* do this part asynchronously */
+ init_completion(&ctx->fw_load_complete);
+ err = request_firmware_nowait(THIS_MODULE, 1, ctx->fwname,
+ ctx->dev->dev->dev, GFP_KERNEL,
+ ctx, b43_fw_cb);
+ if (err < 0) {
+ pr_err("Unable to load firmware\n");
+ return err;
+ }
+ /* stall here until fw ready */
+ wait_for_completion(&ctx->fw_load_complete);
+ if (ctx->blob)
+ goto fw_ready;
+ /* On some ARM systems, the async request will fail, but the next sync
+ * request works. For this reason, we dall through here
+ */
+ }
+ err = request_firmware(&ctx->blob, ctx->fwname,
+ ctx->dev->dev->dev);
if (err == -ENOENT) {
snprintf(ctx->errors[ctx->req_type],
sizeof(ctx->errors[ctx->req_type]),
- "Firmware file \"%s\" not found\n", ctx->fwname);
+ "Firmware file \"%s\" not found\n",
+ ctx->fwname);
return err;
} else if (err) {
snprintf(ctx->errors[ctx->req_type],
@@ -2144,14 +2171,15 @@ int b43_do_request_fw(struct b43_request_fw_context *ctx,
ctx->fwname, err);
return err;
}
- if (blob->size < sizeof(struct b43_fw_header))
+fw_ready:
+ if (ctx->blob->size < sizeof(struct b43_fw_header))
goto err_format;
- hdr = (struct b43_fw_header *)(blob->data);
+ hdr = (struct b43_fw_header *)(ctx->blob->data);
switch (hdr->type) {
case B43_FW_TYPE_UCODE:
case B43_FW_TYPE_PCM:
size = be32_to_cpu(hdr->size);
- if (size != blob->size - sizeof(struct b43_fw_header))
+ if (size != ctx->blob->size - sizeof(struct b43_fw_header))
goto err_format;
/* fallthrough */
case B43_FW_TYPE_IV:
@@ -2162,7 +2190,7 @@ int b43_do_request_fw(struct b43_request_fw_context *ctx,
goto err_format;
}
- fw->data = blob;
+ fw->data = ctx->blob;
fw->filename = name;
fw->type = ctx->req_type;
@@ -2172,7 +2200,7 @@ err_format:
snprintf(ctx->errors[ctx->req_type],
sizeof(ctx->errors[ctx->req_type]),
"Firmware file \"%s\" format error.\n", ctx->fwname);
- release_firmware(blob);
+ release_firmware(ctx->blob);
return -EPROTO;
}
@@ -2223,7 +2251,7 @@ static int b43_try_request_fw(struct b43_request_fw_context *ctx)
goto err_no_ucode;
}
}
- err = b43_do_request_fw(ctx, filename, &fw->ucode);
+ err = b43_do_request_fw(ctx, filename, &fw->ucode, true);
if (err)
goto err_load;
@@ -2235,7 +2263,7 @@ static int b43_try_request_fw(struct b43_request_fw_context *ctx)
else
goto err_no_pcm;
fw->pcm_request_failed = false;
- err = b43_do_request_fw(ctx, filename, &fw->pcm);
+ err = b43_do_request_fw(ctx, filename, &fw->pcm, false);
if (err == -ENOENT) {
/* We did not find a PCM file? Not fatal, but
* core rev <= 10 must do without hwcrypto then. */
@@ -2296,7 +2324,7 @@ static int b43_try_request_fw(struct b43_request_fw_context *ctx)
default:
goto err_no_initvals;
}
- err = b43_do_request_fw(ctx, filename, &fw->initvals);
+ err = b43_do_request_fw(ctx, filename, &fw->initvals, false);
if (err)
goto err_load;
@@ -2355,7 +2383,7 @@ static int b43_try_request_fw(struct b43_request_fw_context *ctx)
default:
goto err_no_initvals;
}
- err = b43_do_request_fw(ctx, filename, &fw->initvals_band);
+ err = b43_do_request_fw(ctx, filename, &fw->initvals_band, false);
if (err)
goto err_load;
diff --git a/drivers/net/wireless/b43/main.h b/drivers/net/wireless/b43/main.h
index 8c684cd3352..abac25ee958 100644
--- a/drivers/net/wireless/b43/main.h
+++ b/drivers/net/wireless/b43/main.h
@@ -137,9 +137,8 @@ void b43_mac_phy_clock_set(struct b43_wldev *dev, bool on);
struct b43_request_fw_context;
-int b43_do_request_fw(struct b43_request_fw_context *ctx,
- const char *name,
- struct b43_firmware_file *fw);
+int b43_do_request_fw(struct b43_request_fw_context *ctx, const char *name,
+ struct b43_firmware_file *fw, bool async);
void b43_do_release_fw(struct b43_firmware_file *fw);
#endif /* B43_MAIN_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-16 04:33:58 +0000