* [PATCH] Bluetooth: btintel: Check firmware version before download
@ 2021-02-03 22:01 Luiz Augusto von Dentz
2021-02-03 23:15 ` bluez.test.bot
2021-02-04 12:55 ` [PATCH] " Marcel Holtmann
0 siblings, 2 replies; 3+ messages in thread
From: Luiz Augusto von Dentz @ 2021-02-03 22:01 UTC (permalink / raw)
To: linux-bluetooth
From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This checking the firmware build number, week and years matches and then
skip the download process.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---
drivers/bluetooth/btintel.c | 92 +++++++++++++++++++++++++++--------
drivers/bluetooth/btintel.h | 5 +-
drivers/bluetooth/btusb.c | 28 +++++++----
drivers/bluetooth/hci_intel.c | 7 ++-
4 files changed, 98 insertions(+), 34 deletions(-)
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
index 88ce5f0ffc4b..7853ff4df237 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -24,6 +24,14 @@
#define ECDSA_OFFSET 644
#define ECDSA_HEADER_LEN 320
+#define CMD_WRITE_BOOT_PARAMS 0xfc0e
+struct cmd_write_boot_params {
+ u32 boot_addr;
+ u8 fw_build_num;
+ u8 fw_build_ww;
+ u8 fw_build_yy;
+} _packed;
+
int btintel_check_bdaddr(struct hci_dev *hdev)
{
struct hci_rp_read_bd_addr *bda;
@@ -841,7 +849,7 @@ static int btintel_sfi_ecdsa_header_secure_send(struct hci_dev *hdev,
static int btintel_download_firmware_payload(struct hci_dev *hdev,
const struct firmware *fw,
- u32 *boot_param, size_t offset)
+ size_t offset)
{
int err;
const u8 *fw_ptr;
@@ -854,20 +862,6 @@ static int btintel_download_firmware_payload(struct hci_dev *hdev,
while (fw_ptr - fw->data < fw->size) {
struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
- /* Each SKU has a different reset parameter to use in the
- * HCI_Intel_Reset command and it is embedded in the firmware
- * data. So, instead of using static value per SKU, check
- * the firmware data and save it for later use.
- */
- if (le16_to_cpu(cmd->opcode) == 0xfc0e) {
- /* The boot parameter is the first 32-bit value
- * and rest of 3 octets are reserved.
- */
- *boot_param = get_unaligned_le32(fw_ptr + sizeof(*cmd));
-
- bt_dev_dbg(hdev, "boot_param=0x%x", *boot_param);
- }
-
frag_len += sizeof(*cmd) + cmd->plen;
/* The parameter length of the secure send command requires
@@ -896,28 +890,88 @@ static int btintel_download_firmware_payload(struct hci_dev *hdev,
return err;
}
+static bool btintel_firmware_version(struct hci_dev *hdev,
+ u8 num, u8 ww, u8 yy,
+ const struct firmware *fw,
+ u32 *boot_addr)
+{
+ const u8 *fw_ptr;
+ u32 frag_len;
+
+ fw_ptr = fw->data;
+ frag_len = 0;
+
+ while (fw_ptr - fw->data < fw->size) {
+ struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
+
+ /* Each SKU has a different reset parameter to use in the
+ * HCI_Intel_Reset command and it is embedded in the firmware
+ * data. So, instead of using static value per SKU, check
+ * the firmware data and save it for later use.
+ */
+ if (le16_to_cpu(cmd->opcode) == CMD_WRITE_BOOT_PARAMS) {
+ struct cmd_write_boot_params *params;
+
+ params = (void *)(fw_ptr + sizeof(*cmd));
+
+ bt_dev_dbg(hdev, "Boot Address: 0x%x",
+ le32_to_cpu(params->boot_addr));
+
+ bt_dev_dbg(hdev, "Firmware Version: %u-%u.%u",
+ params->fw_build_num, params->fw_build_ww,
+ params->fw_build_yy);
+
+ return (num == params->fw_build_num &&
+ ww == params->fw_build_ww &&
+ yy == params->fw_build_yy);
+ }
+
+ frag_len += sizeof(*cmd) + cmd->plen;
+ }
+
+ return false;
+}
+
int btintel_download_firmware(struct hci_dev *hdev,
+ struct intel_version *ver,
const struct firmware *fw,
u32 *boot_param)
{
int err;
+ /* Skip download if firmware has the same version */
+ if (btintel_firmware_version(hdev, ver->fw_build_num, ver->fw_build_ww,
+ ver->fw_build_yy, fw, boot_param))
+ /* Return -EALREADY to indicate that the firmware has already
+ * been loaded.
+ */
+ return -EALREADY;
+
err = btintel_sfi_rsa_header_secure_send(hdev, fw);
if (err)
return err;
- return btintel_download_firmware_payload(hdev, fw, boot_param,
- RSA_HEADER_LEN);
+ return btintel_download_firmware_payload(hdev, fw, RSA_HEADER_LEN);
}
EXPORT_SYMBOL_GPL(btintel_download_firmware);
int btintel_download_firmware_newgen(struct hci_dev *hdev,
+ struct intel_version_tlv *ver,
const struct firmware *fw, u32 *boot_param,
u8 hw_variant, u8 sbe_type)
{
int err;
u32 css_header_ver;
+ /* Skip download if firmware has the same version */
+ if (btintel_firmware_version(hdev, ver->min_fw_build_nn,
+ ver->min_fw_build_cw, ver->min_fw_build_yy,
+ fw, boot_param))
+ /* Return -EALREADY to indicate that firmware has already been
+ * loaded.
+ */
+ return -EALREADY;
+
/* iBT hardware variants 0x0b, 0x0c, 0x11, 0x12, 0x13, 0x14 support
* only RSA secure boot engine. Hence, the corresponding sfi file will
* have RSA header of 644 bytes followed by Command Buffer.
@@ -947,7 +1001,7 @@ int btintel_download_firmware_newgen(struct hci_dev *hdev,
if (err)
return err;
- err = btintel_download_firmware_payload(hdev, fw, boot_param, RSA_HEADER_LEN);
+ err = btintel_download_firmware_payload(hdev, fw, RSA_HEADER_LEN);
if (err)
return err;
} else if (hw_variant >= 0x17) {
@@ -968,7 +1022,6 @@ int btintel_download_firmware_newgen(struct hci_dev *hdev,
return err;
err = btintel_download_firmware_payload(hdev, fw,
- boot_param,
RSA_HEADER_LEN + ECDSA_HEADER_LEN);
if (err)
return err;
@@ -978,7 +1031,6 @@ int btintel_download_firmware_newgen(struct hci_dev *hdev,
return err;
err = btintel_download_firmware_payload(hdev, fw,
- boot_param,
RSA_HEADER_LEN + ECDSA_HEADER_LEN);
if (err)
return err;
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
index 6511b091caf5..51f1f2c883b4 100644
--- a/drivers/bluetooth/btintel.h
+++ b/drivers/bluetooth/btintel.h
@@ -163,9 +163,10 @@ struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read,
int btintel_send_intel_reset(struct hci_dev *hdev, u32 boot_param);
int btintel_read_boot_params(struct hci_dev *hdev,
struct intel_boot_params *params);
-int btintel_download_firmware(struct hci_dev *dev, const struct firmware *fw,
- u32 *boot_param);
+int btintel_download_firmware(struct hci_dev *dev, struct intel_version *ver,
+ const struct firmware *fw, u32 *boot_param);
int btintel_download_firmware_newgen(struct hci_dev *hdev,
+ struct intel_version_tlv *ver,
const struct firmware *fw,
u32 *boot_param, u8 hw_variant,
u8 sbe_type);
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 4266c057746e..46a6795198da 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2612,14 +2612,18 @@ static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev,
set_bit(BTUSB_DOWNLOADING, &data->flags);
/* Start firmware downloading and get boot parameter */
- err = btintel_download_firmware_newgen(hdev, fw, boot_param,
+ err = btintel_download_firmware_newgen(hdev, ver, fw, boot_param,
INTEL_HW_VARIANT(ver->cnvi_bt),
ver->sbe_type);
if (err < 0) {
- /* When FW download fails, send Intel Reset to retry
- * FW download.
- */
- btintel_reset_to_bootloader(hdev);
+ /* -EALREADY indicates the firmware has already been loaded */
+ if (err == -EALREADY)
+ set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
+ else
+ /* When FW download fails, send Intel Reset to retry
+ * FW download.
+ */
+ btintel_reset_to_bootloader(hdev);
goto done;
}
set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
@@ -2806,12 +2810,16 @@ static int btusb_intel_download_firmware(struct hci_dev *hdev,
set_bit(BTUSB_DOWNLOADING, &data->flags);
/* Start firmware downloading and get boot parameter */
- err = btintel_download_firmware(hdev, fw, boot_param);
+ err = btintel_download_firmware(hdev, ver, fw, boot_param);
if (err < 0) {
- /* When FW download fails, send Intel Reset to retry
- * FW download.
- */
- btintel_reset_to_bootloader(hdev);
+ /* -EALREADY indicates the firmware has already been loaded */
+ if (err == -EALREADY)
+ set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
+ else
+ /* When FW download fails, send Intel Reset to retry
+ * FW download.
+ */
+ btintel_reset_to_bootloader(hdev);
goto done;
}
set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
index b20a40fab83e..7249b91d9b91 100644
--- a/drivers/bluetooth/hci_intel.c
+++ b/drivers/bluetooth/hci_intel.c
@@ -735,7 +735,7 @@ static int intel_setup(struct hci_uart *hu)
set_bit(STATE_DOWNLOADING, &intel->flags);
/* Start firmware downloading and get boot parameter */
- err = btintel_download_firmware(hdev, fw, &boot_param);
+ err = btintel_download_firmware(hdev, &ver, fw, &boot_param);
if (err < 0)
goto done;
@@ -784,7 +784,10 @@ static int intel_setup(struct hci_uart *hu)
done:
release_firmware(fw);
- if (err < 0)
+ /* Check if there was an error and if is not -EALREADY which means the
+ * firmware has already been loaded.
+ */
+ if (err < 0 && err != -EALREADY)
return err;
/* We need to restore the default speed before Intel reset */
--
2.26.2
^ permalink raw reply related [flat|nested] 3+ messages in thread* RE: Bluetooth: btintel: Check firmware version before download
2021-02-03 22:01 [PATCH] Bluetooth: btintel: Check firmware version before download Luiz Augusto von Dentz
@ 2021-02-03 23:15 ` bluez.test.bot
2021-02-04 12:55 ` [PATCH] " Marcel Holtmann
1 sibling, 0 replies; 3+ messages in thread
From: bluez.test.bot @ 2021-02-03 23:15 UTC (permalink / raw)
To: linux-bluetooth, luiz.dentz
[-- Attachment #1: Type: text/plain, Size: 1599 bytes --]
This is automated email and please do not reply to this email!
Dear submitter,
Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=427419
---Test result---
##############################
Test: CheckPatch - PASS
##############################
Test: CheckGitLint - PASS
##############################
Test: CheckBuildK - PASS
##############################
Test: CheckTestRunner: Setup - PASS
##############################
Test: CheckTestRunner: l2cap-tester - PASS
Total: 40, Passed: 34 (85.0%), Failed: 0, Not Run: 6
##############################
Test: CheckTestRunner: bnep-tester - PASS
Total: 1, Passed: 1 (100.0%), Failed: 0, Not Run: 0
##############################
Test: CheckTestRunner: mgmt-tester - PASS
Total: 416, Passed: 402 (96.6%), Failed: 0, Not Run: 14
##############################
Test: CheckTestRunner: rfcomm-tester - PASS
Total: 9, Passed: 9 (100.0%), Failed: 0, Not Run: 0
##############################
Test: CheckTestRunner: sco-tester - PASS
Total: 8, Passed: 8 (100.0%), Failed: 0, Not Run: 0
##############################
Test: CheckTestRunner: smp-tester - PASS
Total: 8, Passed: 8 (100.0%), Failed: 0, Not Run: 0
##############################
Test: CheckTestRunner: userchan-tester - PASS
Total: 3, Passed: 3 (100.0%), Failed: 0, Not Run: 0
---
Regards,
Linux Bluetooth
[-- Attachment #2: l2cap-tester.log --]
[-- Type: application/octet-stream, Size: 43341 bytes --]
[-- Attachment #3: bnep-tester.log --]
[-- Type: application/octet-stream, Size: 3532 bytes --]
[-- Attachment #4: mgmt-tester.log --]
[-- Type: application/octet-stream, Size: 546679 bytes --]
[-- Attachment #5: rfcomm-tester.log --]
[-- Type: application/octet-stream, Size: 11652 bytes --]
[-- Attachment #6: sco-tester.log --]
[-- Type: application/octet-stream, Size: 9887 bytes --]
[-- Attachment #7: smp-tester.log --]
[-- Type: application/octet-stream, Size: 11798 bytes --]
[-- Attachment #8: userchan-tester.log --]
[-- Type: application/octet-stream, Size: 5429 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] Bluetooth: btintel: Check firmware version before download
2021-02-03 22:01 [PATCH] Bluetooth: btintel: Check firmware version before download Luiz Augusto von Dentz
2021-02-03 23:15 ` bluez.test.bot
@ 2021-02-04 12:55 ` Marcel Holtmann
1 sibling, 0 replies; 3+ messages in thread
From: Marcel Holtmann @ 2021-02-04 12:55 UTC (permalink / raw)
To: Luiz Augusto von Dentz; +Cc: linux-bluetooth
Hi Luiz,
> This checking the firmware build number, week and years matches and then
> skip the download process.
>
> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
> ---
> drivers/bluetooth/btintel.c | 92 +++++++++++++++++++++++++++--------
> drivers/bluetooth/btintel.h | 5 +-
> drivers/bluetooth/btusb.c | 28 +++++++----
> drivers/bluetooth/hci_intel.c | 7 ++-
> 4 files changed, 98 insertions(+), 34 deletions(-)
>
> diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
> index 88ce5f0ffc4b..7853ff4df237 100644
> --- a/drivers/bluetooth/btintel.c
> +++ b/drivers/bluetooth/btintel.c
> @@ -24,6 +24,14 @@
> #define ECDSA_OFFSET 644
> #define ECDSA_HEADER_LEN 320
>
> +#define CMD_WRITE_BOOT_PARAMS 0xfc0e
> +struct cmd_write_boot_params {
> + u32 boot_addr;
> + u8 fw_build_num;
> + u8 fw_build_ww;
> + u8 fw_build_yy;
> +} _packed;
> +
it should be __packed here. Didn’t know that _packed exists.
> int btintel_check_bdaddr(struct hci_dev *hdev)
> {
> struct hci_rp_read_bd_addr *bda;
> @@ -841,7 +849,7 @@ static int btintel_sfi_ecdsa_header_secure_send(struct hci_dev *hdev,
>
> static int btintel_download_firmware_payload(struct hci_dev *hdev,
> const struct firmware *fw,
> - u32 *boot_param, size_t offset)
> + size_t offset)
> {
> int err;
> const u8 *fw_ptr;
> @@ -854,20 +862,6 @@ static int btintel_download_firmware_payload(struct hci_dev *hdev,
> while (fw_ptr - fw->data < fw->size) {
> struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
>
> - /* Each SKU has a different reset parameter to use in the
> - * HCI_Intel_Reset command and it is embedded in the firmware
> - * data. So, instead of using static value per SKU, check
> - * the firmware data and save it for later use.
> - */
> - if (le16_to_cpu(cmd->opcode) == 0xfc0e) {
> - /* The boot parameter is the first 32-bit value
> - * and rest of 3 octets are reserved.
> - */
> - *boot_param = get_unaligned_le32(fw_ptr + sizeof(*cmd));
> -
> - bt_dev_dbg(hdev, "boot_param=0x%x", *boot_param);
> - }
> -
> frag_len += sizeof(*cmd) + cmd->plen;
>
> /* The parameter length of the secure send command requires
> @@ -896,28 +890,88 @@ static int btintel_download_firmware_payload(struct hci_dev *hdev,
> return err;
> }
>
> +static bool btintel_firmware_version(struct hci_dev *hdev,
> + u8 num, u8 ww, u8 yy,
> + const struct firmware *fw,
> + u32 *boot_addr)
> +{
> + const u8 *fw_ptr;
> + u32 frag_len;
> +
> + fw_ptr = fw->data;
> + frag_len = 0;
> +
> + while (fw_ptr - fw->data < fw->size) {
> + struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
> +
> + /* Each SKU has a different reset parameter to use in the
> + * HCI_Intel_Reset command and it is embedded in the firmware
> + * data. So, instead of using static value per SKU, check
> + * the firmware data and save it for later use.
> + */
> + if (le16_to_cpu(cmd->opcode) == CMD_WRITE_BOOT_PARAMS) {
> + struct cmd_write_boot_params *params;
> +
> + params = (void *)(fw_ptr + sizeof(*cmd));
> +
> + bt_dev_dbg(hdev, "Boot Address: 0x%x",
> + le32_to_cpu(params->boot_addr));
> +
> + bt_dev_dbg(hdev, "Firmware Version: %u-%u.%u",
> + params->fw_build_num, params->fw_build_ww,
> + params->fw_build_yy);
> +
> + return (num == params->fw_build_num &&
> + ww == params->fw_build_ww &&
> + yy == params->fw_build_yy);
> + }
> +
> + frag_len += sizeof(*cmd) + cmd->plen;
> + }
> +
> + return false;
> +}
> +
> int btintel_download_firmware(struct hci_dev *hdev,
> + struct intel_version *ver,
> const struct firmware *fw,
> u32 *boot_param)
> {
> int err;
>
> + /* Skip download if firmware has the same version */
> + if (btintel_firmware_version(hdev, ver->fw_build_num, ver->fw_build_ww,
> + ver->fw_build_yy, fw, boot_param))
> + /* Return -EALREADY to indicate that the firmware has already
> + * been loaded.
> + */
> + return -EALREADY;
> +
In these cases we put the { } around it to make it visually more clear. And I would actually shorten the comment to “Return here to indicate that the firmware has already been loaded */. The EALREADY is self-explanatory.
> err = btintel_sfi_rsa_header_secure_send(hdev, fw);
> if (err)
> return err;
>
> - return btintel_download_firmware_payload(hdev, fw, boot_param,
> - RSA_HEADER_LEN);
> + return btintel_download_firmware_payload(hdev, fw, RSA_HEADER_LEN);
> }
> EXPORT_SYMBOL_GPL(btintel_download_firmware);
>
> int btintel_download_firmware_newgen(struct hci_dev *hdev,
> + struct intel_version_tlv *ver,
> const struct firmware *fw, u32 *boot_param,
> u8 hw_variant, u8 sbe_type)
> {
> int err;
> u32 css_header_ver;
>
> + /* Skip download if firmware has the same version */
> + if (btintel_firmware_version(hdev, ver->min_fw_build_nn,
> + ver->min_fw_build_cw, ver->min_fw_build_yy,
> + fw, boot_param))
> + /* Return -EALREADY to indicate that firmware has already been
> + * loaded.
> + */
> + return -EALREADY;
> +
Same as above.
> /* iBT hardware variants 0x0b, 0x0c, 0x11, 0x12, 0x13, 0x14 support
> * only RSA secure boot engine. Hence, the corresponding sfi file will
> * have RSA header of 644 bytes followed by Command Buffer.
> @@ -947,7 +1001,7 @@ int btintel_download_firmware_newgen(struct hci_dev *hdev,
> if (err)
> return err;
>
> - err = btintel_download_firmware_payload(hdev, fw, boot_param, RSA_HEADER_LEN);
> + err = btintel_download_firmware_payload(hdev, fw, RSA_HEADER_LEN);
> if (err)
> return err;
> } else if (hw_variant >= 0x17) {
> @@ -968,7 +1022,6 @@ int btintel_download_firmware_newgen(struct hci_dev *hdev,
> return err;
>
> err = btintel_download_firmware_payload(hdev, fw,
> - boot_param,
> RSA_HEADER_LEN + ECDSA_HEADER_LEN);
> if (err)
> return err;
> @@ -978,7 +1031,6 @@ int btintel_download_firmware_newgen(struct hci_dev *hdev,
> return err;
>
> err = btintel_download_firmware_payload(hdev, fw,
> - boot_param,
> RSA_HEADER_LEN + ECDSA_HEADER_LEN);
> if (err)
> return err;
> diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
> index 6511b091caf5..51f1f2c883b4 100644
> --- a/drivers/bluetooth/btintel.h
> +++ b/drivers/bluetooth/btintel.h
> @@ -163,9 +163,10 @@ struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read,
> int btintel_send_intel_reset(struct hci_dev *hdev, u32 boot_param);
> int btintel_read_boot_params(struct hci_dev *hdev,
> struct intel_boot_params *params);
> -int btintel_download_firmware(struct hci_dev *dev, const struct firmware *fw,
> - u32 *boot_param);
> +int btintel_download_firmware(struct hci_dev *dev, struct intel_version *ver,
> + const struct firmware *fw, u32 *boot_param);
> int btintel_download_firmware_newgen(struct hci_dev *hdev,
> + struct intel_version_tlv *ver,
> const struct firmware *fw,
> u32 *boot_param, u8 hw_variant,
> u8 sbe_type);
> diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
> index 4266c057746e..46a6795198da 100644
> --- a/drivers/bluetooth/btusb.c
> +++ b/drivers/bluetooth/btusb.c
> @@ -2612,14 +2612,18 @@ static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev,
> set_bit(BTUSB_DOWNLOADING, &data->flags);
>
> /* Start firmware downloading and get boot parameter */
> - err = btintel_download_firmware_newgen(hdev, fw, boot_param,
> + err = btintel_download_firmware_newgen(hdev, ver, fw, boot_param,
> INTEL_HW_VARIANT(ver->cnvi_bt),
> ver->sbe_type);
> if (err < 0) {
> - /* When FW download fails, send Intel Reset to retry
> - * FW download.
> - */
> - btintel_reset_to_bootloader(hdev);
> + /* -EALREADY indicates the firmware has already been loaded */
> + if (err == -EALREADY)
> + set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
> + else
> + /* When FW download fails, send Intel Reset to retry
> + * FW download.
> + */
> + btintel_reset_to_bootloader(hdev);
> goto done;
> }
> set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
> @@ -2806,12 +2810,16 @@ static int btusb_intel_download_firmware(struct hci_dev *hdev,
> set_bit(BTUSB_DOWNLOADING, &data->flags);
>
> /* Start firmware downloading and get boot parameter */
> - err = btintel_download_firmware(hdev, fw, boot_param);
> + err = btintel_download_firmware(hdev, ver, fw, boot_param);
> if (err < 0) {
> - /* When FW download fails, send Intel Reset to retry
> - * FW download.
> - */
> - btintel_reset_to_bootloader(hdev);
> + /* -EALREADY indicates the firmware has already been loaded */
> + if (err == -EALREADY)
> + set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
> + else
> + /* When FW download fails, send Intel Reset to retry
> + * FW download.
> + */
> + btintel_reset_to_bootloader(hdev);
> goto done;
if (err == -EALREADY) {
/* Firmware has already been loaded */
set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
goto done;
}
/* If the firmware download fails, send Intel Reset to retry
* the download. */
btintel_reset_to_bootloader(hdev);
goto done;
This way it is just a lot easy to read in case we ever need to look at this part of the code again.
> }
> set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
> diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
> index b20a40fab83e..7249b91d9b91 100644
> --- a/drivers/bluetooth/hci_intel.c
> +++ b/drivers/bluetooth/hci_intel.c
> @@ -735,7 +735,7 @@ static int intel_setup(struct hci_uart *hu)
> set_bit(STATE_DOWNLOADING, &intel->flags);
>
> /* Start firmware downloading and get boot parameter */
> - err = btintel_download_firmware(hdev, fw, &boot_param);
> + err = btintel_download_firmware(hdev, &ver, fw, &boot_param);
> if (err < 0)
> goto done;
>
> @@ -784,7 +784,10 @@ static int intel_setup(struct hci_uart *hu)
> done:
> release_firmware(fw);
>
> - if (err < 0)
> + /* Check if there was an error and if is not -EALREADY which means the
> + * firmware has already been loaded.
> + */
> + if (err < 0 && err != -EALREADY)
> return err;
>
> /* We need to restore the default speed before Intel reset */
Regards
Marcel
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-02-04 12:56 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-03 22:01 [PATCH] Bluetooth: btintel: Check firmware version before download Luiz Augusto von Dentz
2021-02-03 23:15 ` bluez.test.bot
2021-02-04 12:55 ` [PATCH] " Marcel Holtmann
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