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path: root/drivers/usb/misc/apple-mfi-fastcharge.c
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* USB: apple-mfi-fastcharge: Fix use after free in probeDan Carpenter2020-12-041-1/+3
| | | | | | | | | | | This code frees "mfi" and then derefences it on the next line to get the error code. Fixes: b0eec52fbe63 ("USB: apple-mfi-fastcharge: Fix kfree after failed kzalloc") Reviewed-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/X8ik4j8yJitVUyfU@mwanda Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* USB: apple-mfi-fastcharge: Fix kfree after failed kzallocLucas Tanure2020-11-181-11/+4
| | | | | | | | kfree don't need to be called after a failed kzalloc Signed-off-by: Lucas Tanure <tanure@linux.com> Link: https://lore.kernel.org/r/20201115102837.331335-1-tanure@linux.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* USB: apple-mfi-fastcharge: fix reference leak in apple_mfi_fc_set_propertyZhang Qilong2020-11-061-1/+3
| | | | | | | | | | | | | | | pm_runtime_get_sync() will increment pm usage at first and it will resume the device later. If runtime of the device has error or device is in inaccessible state(or other error state), resume operation will fail. If we do not call put operation to decrease the reference, the result is that this device cannot enter the idle state and always stay busy or other non-idle state. Fixes: 249fa8217b846 ("USB: Add driver to control USB fast charge for iOS devices") Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com> Link: https://lore.kernel.org/r/20201102022650.67115-1-zhangqilong3@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* USB: apple-mfi-fastcharge: don't probe unhandled devicesBastien Nocera2020-10-281-5/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Bastien Nocera <hadess@hadess.net> Contrary to the comment above the id table, we didn't implement a match function. This meant that every single Apple device that was already plugged in to the computer would have its device driver reprobed when the apple-mfi-fastcharge driver was loaded, eg. the SD card reader could be reprobed when the apple-mfi-fastcharge after pivoting root during boot up and the module became available. Make sure that the driver probe isn't being run for unsupported devices by adding a match function that checks the product ID, in addition to the id_table checking the vendor ID. Link: https://bugzilla.redhat.com/show_bug.cgi?id=1878347 Link: https://lore.kernel.org/linux-usb/CAE3RAxt0WhBEz8zkHrVO5RiyEOasayy1QUAjsv-pB0fAbY1GSw@mail.gmail.com/ Fixes: 249fa8217b84 ("USB: Add driver to control USB fast charge for iOS devices") Cc: <stable@vger.kernel.org> # 5.8 Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Alan Stern <stern@rowland.harvard.edu> [m.v.b: Add Link and Reported-by tags to the commit message] Reported-by: Pany <pany@fedoraproject.org> Tested-by: Pan (Pany) YUAN <pany@fedoraproject.org> Tested-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: M. Vefa Bicakci <m.v.b@runbox.com> Link: https://lore.kernel.org/r/20201022135521.375211-3-m.v.b@runbox.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* USB: apple-mfi-fastcharge: fix endianess issue in probeOliver Neukum2020-02-131-3/+3
| | | | | | | | | | The product ID is little endian and needs to be converted. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Oliver Neukum <oneukum@suse.com> Reviewed-by: Bastien Nocera <hadess@hadess.net> Link: https://lore.kernel.org/r/20200213111336.32392-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* USB: Add driver to control USB fast charge for iOS devicesBastien Nocera2020-02-121-0/+237
iOS devices will not draw more than 500mA unless instructed to do so. Setting the charge type power supply property to "fast" tells the device to start drawing more power, using the same procedure that official "MFi" chargers would. Signed-off-by: Bastien Nocera <hadess@hadess.net> Acked-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/20191016093933.693-7-hadess@hadess.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>