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The usb transaction buffers are allocated in module init.
In device open, close and disconnect the buffers will not be
freed. Instead they will be reused to avoid allocation failure
in low-mem conditions.
The usb driver register moved to init so that rmmod and
insmod is not required.
Bug 956211
Signed-off-by: Vinayak Pane <vpane@nvidia.com>
Reviewed-on: http://git-master/r/109935
(cherry picked from commit a4e8219a86f80fd06aaaae2c40a657098d5dcfa5)
Change-Id: Id88cfe3b0a75cb2e6f39176b5297f81f4f9e978b
Reviewed-on: http://git-master/r/115609
Tested-by: Vinayak Pane <vpane@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Steve Lin <stlin@nvidia.com>
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Add support for another XMM modem.
Bug 996038
Change-Id: I392a18284b372fbc80c581b31b21af3c072bf4d3
Signed-off-by: Michael Hsu <mhsu@nvidia.com>
Reviewed-on: http://git-master/r/110193
(cherry picked from commit bdad2e9c1b195c8f7fcc3216f2bf27ea99dfd597)
Reviewed-on: http://git-master/r/110941
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Vinayak Pane <vpane@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Steve Lin <stlin@nvidia.com>
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Two threads race for two resources when baseband_usb_close()
get called from a user process
Bug 988188
Change-Id: Ic962640b6414e576d34b7ff6870b21b644837434
Signed-off-by: pyu <pyu@nvidia.com>
Reviewed-on: http://git-master/r/107088
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vinayak Pane <vpane@nvidia.com>
Reviewed-by: Steve Lin <stlin@nvidia.com>
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This commit reorganizes the usb chr driver for
(1) Application does not have to rmmod & insmod
(2) Application recovery mechanism to restart download
(3) Change memory allocation policy to accommodate in low-mem
situations.
(4) Avoid kernel panic when module is not removed
Bug 947621
Bug 956211
Reviewed-on: http://git-master/r/91373
(cherry picked from commit bb5a148979a92191e0dfb4d97d4942f877f18309)
Change-Id: I2679d1d5f94cfe6e7dc98df0026f64cab703fe5c
Signed-off-by: Vinayak Pane <vpane@nvidia.com>
Reviewed-on: http://git-master/r/96334
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Steve Lin <stlin@nvidia.com>
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Flushing pending urb requests on disconnection.
Blocks usb requests on usb device disconnection.
BUG 919270
Reviewed-on: http://git-master/r/72832
Change-Id: I9ae10685d9517e0626338cfd42b21479d7d480eb
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Reviewed-on: http://git-master/r/77760
Reviewed-by: Automatic_Commit_Validation_User
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Check the state machine before poweron the modem by device
attribute change routine. Maintain the state machine to
avoid crash after writing state change to
/sys/devices/platform/baseband_xmm_power/xmm_onoff
Also cancel workqueue at module unload to avoid
possible crash.
Bug 898008
Reviewed-on: http://git-master/r/72934
Change-Id: I0d8286774040f155c930ecb0bb69778de6c606ac
Signed-off-by: Vinayak Pane <vpane@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Reviewed-on: http://git-master/r/77744
Reviewed-by: Automatic_Commit_Validation_User
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XMM modem baseband character driver, which is used to download
modem software, had race condition. If USB host stack has
not enumerated XMM modem boot rom yet, then driver aborts module
load.
With this change, I/O (such as downloading modem software) will
be delayed until USB host stack has enumerated modem boot rom.
BUG 828389
Reviewed-on: http://git-master/r/58870
(cherry picked from commit 22a5122689ab957fd0236cf2fcf1623dac82ab69)
Change-Id: Ib858363b11ea41d40218ed9ed044012421209371
Reviewed-on: http://git-master/r/62734
Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
Tested-by: Varun Colbert <vcolbert@nvidia.com>
Rebase-Id: Re7857218c723d3c43072f17ccf5ffc70a7faf163
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Add raw character device driver for baseband modems. Suitable
for downloading modem software image to flashless modem, or sending
AT modem commands after modem software is running.
Original-Change-Id: I0de126c5eb8700db196e9d6838d65ccce1480c42
Reviewed-on: http://git-master/r/40936
Reviewed-by: Michael Hsu <mhsu@nvidia.com>
Tested-by: Michael Hsu <mhsu@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Rebase-Id: R76607c0d7b47938fa49d4ec57e9962f2d683a5cb
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