This is a note to let you know that I've just added the patch titled staging: comedi: me4000: Fix endian problem for AI command data to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: staging-comedi-me4000-fix-endian-problem-for-ai-command-data.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From b39dfcced399d31e7c4b7341693b18e01c8f655e Mon Sep 17 00:00:00 2001 From: Ian Abbott <abbotti@xxxxxxxxx> Date: Tue, 23 Feb 2021 14:30:48 +0000 Subject: staging: comedi: me4000: Fix endian problem for AI command data From: Ian Abbott <abbotti@xxxxxxxxx> commit b39dfcced399d31e7c4b7341693b18e01c8f655e upstream. The analog input subdevice supports Comedi asynchronous commands that use Comedi's 16-bit sample format. However, the calls to `comedi_buf_write_samples()` are passing the address of a 32-bit integer variable. On bigendian machines, this will copy 2 bytes from the wrong end of the 32-bit value. Fix it by changing the type of the variable holding the sample value to `unsigned short`. Fixes: de88924f67d1 ("staging: comedi: me4000: use comedi_buf_write_samples()") Cc: <stable@xxxxxxxxxxxxxxx> # 3.19+ Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx> Link: https://lore.kernel.org/r/20210223143055.257402-8-abbotti@xxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/staging/comedi/drivers/me4000.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/staging/comedi/drivers/me4000.c +++ b/drivers/staging/comedi/drivers/me4000.c @@ -924,7 +924,7 @@ static irqreturn_t me4000_ai_isr(int irq struct comedi_subdevice *s = dev->read_subdev; int i; int c = 0; - unsigned int lval; + unsigned short lval; if (!dev->attached) return IRQ_NONE; Patches currently in stable-queue which might be from abbotti@xxxxxxxxx are queue-5.4/staging-comedi-addi_apci_1500-fix-endian-problem-for-command-sample.patch queue-5.4/staging-comedi-das800-fix-endian-problem-for-ai-command-data.patch queue-5.4/staging-comedi-pcl818-fix-endian-problem-for-ai-command-data.patch queue-5.4/staging-comedi-dmm32at-fix-endian-problem-for-ai-command-data.patch queue-5.4/staging-comedi-pcl711-fix-endian-problem-for-ai-command-data.patch queue-5.4/staging-comedi-das6402-fix-endian-problem-for-ai-command-data.patch queue-5.4/staging-comedi-me4000-fix-endian-problem-for-ai-command-data.patch queue-5.4/staging-comedi-addi_apci_1032-fix-endian-problem-for-cos-sample.patch queue-5.4/staging-comedi-adv_pci1710-fix-endian-problem-for-ai-command-data.patch