From 6a0f7ab8305cb60a43a6c4a548f57adab784e6cd Mon Sep 17 00:00:00 2001 From: Inaky Perez-Gonzalez Date: Sat, 28 Feb 2009 23:42:49 +0000 Subject: [PATCH] wimax/i2400m: firmware_check() encodes the firmware version in i2400m->fw_version Upcoming modifications will need to test for the running firmware version before activating a feature or not. This is helpful to implement backward compatibility with older firmware versions. Modify i2400m_firmware_check() to encode in i2400m->fw_version the major and minor version numbers of the firmware interface. As well, move the call to be done as the very first operation once we have communication with the device during probe() [in __i2400m_dev_start()]. This is needed so any operation that is executed afterwards can determine which fw version it is talking to. Signed-off-by: Inaky Perez-Gonzalez Signed-off-by: David S. Miller --- drivers/net/wimax/i2400m/control.c | 12 +++++++----- drivers/net/wimax/i2400m/driver.c | 5 +++++ drivers/net/wimax/i2400m/i2400m.h | 4 ++++ 3 files changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/net/wimax/i2400m/control.c b/drivers/net/wimax/i2400m/control.c index ac8fb6d07e61..c8b3a68b72b8 100644 --- a/drivers/net/wimax/i2400m/control.c +++ b/drivers/net/wimax/i2400m/control.c @@ -52,7 +52,6 @@ * * i2400m_dev_initalize() Called by i2400m_dev_start() * i2400m_set_init_config() - * i2400m_firmware_check() * i2400m_cmd_get_state() * i2400m_dev_shutdown() Called by i2400m_dev_stop() * i2400m->bus_reset() @@ -959,6 +958,10 @@ enum { * Long function, but quite simple; first chunk launches the command * and double checks the reply for the right TLV. Then we process the * TLV (where the meat is). + * + * Once we process the TLV that gives us the firmware's interface + * version, we encode it and save it in i2400m->fw_version for future + * reference. */ int i2400m_firmware_check(struct i2400m *i2400m) { @@ -1018,9 +1021,11 @@ int i2400m_firmware_check(struct i2400m *i2400m) if (minor < I2400M_HDIv_MINOR_2 && minor > I2400M_HDIv_MINOR) dev_warn(dev, "untested minor fw version %u.%u.%u\n", major, minor, branch); -error_bad_major: + /* Yes, we ignore the branch -- we don't have to track it */ + i2400m->fw_version = major << 16 | minor; dev_info(dev, "firmware interface version %u.%u.%u\n", major, minor, branch); +error_bad_major: error_no_tlv: error_cmd_failed: kfree_skb(ack_skb); @@ -1249,9 +1254,6 @@ int i2400m_dev_initialize(struct i2400m *i2400m) args[argc++] = &idle_params.hdr; } result = i2400m_set_init_config(i2400m, args, argc); - if (result < 0) - goto error; - result = i2400m_firmware_check(i2400m); /* fw versions ok? */ if (result < 0) goto error; /* diff --git a/drivers/net/wimax/i2400m/driver.c b/drivers/net/wimax/i2400m/driver.c index e80a0b65a754..69a816e7c5db 100644 --- a/drivers/net/wimax/i2400m/driver.c +++ b/drivers/net/wimax/i2400m/driver.c @@ -48,6 +48,7 @@ * i2400m_dev_bootstrap() * i2400m_tx_setup() * i2400m->bus_dev_start() + * i2400m_firmware_check() * i2400m_check_mac_addr() * wimax_dev_add() * @@ -404,6 +405,9 @@ retry: dev_err(dev, "cannot create workqueue\n"); goto error_create_workqueue; } + result = i2400m_firmware_check(i2400m); /* fw versions ok? */ + if (result < 0) + goto error_fw_check; /* At this point is ok to send commands to the device */ result = i2400m_check_mac_addr(i2400m); if (result < 0) @@ -421,6 +425,7 @@ retry: error_dev_initialize: error_check_mac_addr: +error_fw_check: destroy_workqueue(i2400m->work_queue); error_create_workqueue: i2400m->bus_dev_stop(i2400m); diff --git a/drivers/net/wimax/i2400m/i2400m.h b/drivers/net/wimax/i2400m/i2400m.h index ad71ad1086ea..5008cdb12b42 100644 --- a/drivers/net/wimax/i2400m/i2400m.h +++ b/drivers/net/wimax/i2400m/i2400m.h @@ -366,6 +366,9 @@ struct i2400m_reset_ctx; * module unloads, as we don't keep each dentry. * * @fw_name: name of the firmware image that is currently being used. + * + * @fw_version: version of the firmware interface, Major.minor, + * encoded in the high word and low word (major << 16 | minor). */ struct i2400m { struct wimax_dev wimax_dev; /* FIRST! See doc */ @@ -424,6 +427,7 @@ struct i2400m { struct dentry *debugfs_dentry; const char *fw_name; /* name of the current firmware image */ + unsigned long fw_version; /* version of the firmware interface */ }; -- 2.30.2