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https://github.com/outbackdingo/mt76.git
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Stanislaw GruszkaandFelix Fietkau
2437a9ad7b
Use usb_bulk_msg for reading MCU command responses. This simplify code
a lot.
Together with 97a3005759c ("mt76usb: allow mt76u_bulk_msg be used
for reads") it also fix possible problems with rx data buffers
not being aligned and contained within single page. After doing
page_frag_alloc(1024) consecutive page_frag_alloc(PAGE_SIZE) will
alloc PAGE_SIZE buffer at PAGE_SIZE - 1024 offset.
Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/*
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* Copyright (C) 2018 Lorenzo Bianconi <[email protected]>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "mt76.h"
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int mt76u_mcu_init_rx(struct mt76_dev *dev)
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{
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struct mt76_usb *usb = &dev->usb;
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usb->mcu.data = kmalloc(MCU_RESP_URB_SIZE, GFP_KERNEL);
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return usb->mcu.data ? 0 : -ENOMEM;
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}
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EXPORT_SYMBOL_GPL(mt76u_mcu_init_rx);
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void mt76u_mcu_deinit(struct mt76_dev *dev)
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{
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struct mt76_usb *usb = &dev->usb;
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kfree(usb->mcu.data);
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}
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EXPORT_SYMBOL_GPL(mt76u_mcu_deinit);
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