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The bug is that we should still enter this loop if "tx_len" is zero.
After adding the "last" variable, then the "chunk >= 0" condition is no
longer required but I left it for readability.
Fixes: c09b1f372e74 ("usb: gadget: aspeed_udc: cleanup loop in ast_dma_descriptor_setup()")
Reported-by: Neal Liu <neal_liu@aspeedtech.com>
Reviewed-by: Neal Liu <neal_liu@aspeedtech.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/Yrq6F5okoX1y05rT@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The print function dev_err() is redundant because platform_get_irq()
already prints an error.
This was found by coccicheck:
./drivers/usb/gadget/udc/aspeed_udc.c:1546:2-9: line 1546 is redundant because platform_get_irq() already prints an error.
Acked-by: Neal Liu <neal_liu@aspeedtech.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220616090410.128483-1-jiapeng.chong@linux.alibaba.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There are a couple of spelling mistakes, one in a dev_warn message
and another in a SETUP_DBG message. Fix these and remove an extraneous
white space too.
Acked-by: Neal Liu <neal_liu@aspeedtech.com>
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220615073518.192827-1-colin.i.king@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The "chunk >= 0" condition does not work because count is a u32.
Also, really we shouldn't enter the loop when "chunk" is zero.
Once that condition is fixed then there is no need for the "last"
variable. I reversed the "if (chunk <= ep->chunk_max)" as well.
The new loop is much simpler.
Fixes: 055276c13205 ("usb: gadget: add Aspeed ast2600 udc driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/Yq2SvM2bbrtSd1H9@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ast_udc_ep_queue misses spin_unlock_irqrestore in an error path,
this patch fixes that.
Fixes: 055276c13205 ("usb: gadget: add Aspeed ast2600 udc driver")
Reviewed-by: Neal Liu <neal_liu@aspeedtech.com>
Signed-off-by: Zheng Bin <zhengbin13@huawei.com>
Link: https://lore.kernel.org/r/20220616133508.3655864-1-zhengbin13@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Aspeed udc is compliant with USB2.0, supports USB High Speed
and Full Speed, backward compatible with USB1.1.
Supports independent DMA channel for each generic endpoint.
Supports 32/256 stages descriptor mode for all generic endpoints.
This driver supports full functionality including single/multiple
stages descriptor mode, and exposes 1 UDC gadget driver.
Signed-off-by: Neal Liu <neal_liu@aspeedtech.com>
Link: https://lore.kernel.org/r/20220523030134.2977116-2-neal_liu@aspeedtech.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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