This is a note to let you know that I've just added the patch titled staging: comedi: das6402: Fix endian problem for AI command data to the 4.9-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-das6402-fix-endian-problem-for-ai-command-data.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 1c0f20b78781b9ca50dc3ecfd396d0db5b141890 Mon Sep 17 00:00:00 2001 From: Ian Abbott <abbotti@xxxxxxxxx> Date: Tue, 23 Feb 2021 14:30:45 +0000 Subject: staging: comedi: das6402: Fix endian problem for AI command data From: Ian Abbott <abbotti@xxxxxxxxx> commit 1c0f20b78781b9ca50dc3ecfd396d0db5b141890 upstream. The analog input subdevice supports Comedi asynchronous commands that use Comedi's 16-bit sample format. However, the call to `comedi_buf_write_samples()` is 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: d1d24cb65ee3 ("staging: comedi: das6402: read analog input samples in interrupt handler") Cc: <stable@xxxxxxxxxxxxxxx> # 3.19+ Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx> Link: https://lore.kernel.org/r/20210223143055.257402-5-abbotti@xxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/staging/comedi/drivers/das6402.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/staging/comedi/drivers/das6402.c +++ b/drivers/staging/comedi/drivers/das6402.c @@ -195,7 +195,7 @@ static irqreturn_t das6402_interrupt(int if (status & DAS6402_STATUS_FFULL) { async->events |= COMEDI_CB_OVERFLOW; } else if (status & DAS6402_STATUS_FFNE) { - unsigned int val; + unsigned short val; val = das6402_ai_read_sample(dev, s); comedi_buf_write_samples(s, &val, 1); Patches currently in stable-queue which might be from abbotti@xxxxxxxxx are queue-4.9/staging-comedi-addi_apci_1500-fix-endian-problem-for-command-sample.patch queue-4.9/staging-comedi-das800-fix-endian-problem-for-ai-command-data.patch queue-4.9/staging-comedi-pcl818-fix-endian-problem-for-ai-command-data.patch queue-4.9/staging-comedi-dmm32at-fix-endian-problem-for-ai-command-data.patch queue-4.9/staging-comedi-pcl711-fix-endian-problem-for-ai-command-data.patch queue-4.9/staging-comedi-das6402-fix-endian-problem-for-ai-command-data.patch queue-4.9/staging-comedi-me4000-fix-endian-problem-for-ai-command-data.patch queue-4.9/staging-comedi-addi_apci_1032-fix-endian-problem-for-cos-sample.patch queue-4.9/staging-comedi-adv_pci1710-fix-endian-problem-for-ai-command-data.patch