(adding ath11k list) fckath@xxxxxx writes: > Hello world; > > I've got a bunch of M.2 Type A/E Wifi 6e cards from Emwicon (WMX7205) > and Sparklan (WNFQ-268AXI(BT)) wirth Qualcomm WCN6856 chips. > > I'd like to use them on DFI AL553 3.5" SBCs with ATOM E3940 processor > (https://www.dfi.com/de/product/index/1409), but I was hit by the > error message "failed to get 32 MSI vectors, only -28 available". Ok, > it seems that the Atom E3900 does not support VT-d. I managed to get > these card working on standard PCs with i7 and i5 with active VT-d. > However, when disabling VT-d in the BIOS I get the same behaviour as > on the Atom boards. > > I tried the single MSI patch on > https://wireless.wiki.kernel.org/en/users/drivers/ath11k but failed to > apply these patches to an 5.15.0 kernel from Debian backports. > > Are there > - patches for 5.15 or 5.16? > - patched drivers for 5.15 or 5.16? > - information where to find a matching driver source on which the patches will apply? The support for one MSI vectors will be in v5.17-rc1, which should be released next Sunday. The feature is already on Linus' tree. IIRC you need these commits, in case you want to backport them: e94b07493da3 ath11k: Set IRQ affinity to CPU0 in case of one MSI vector 915a081ff307 ath11k: do not restore ASPM in case of single MSI vector ac6e73483f7b ath11k: add support one MSI vector c41a6700b276 ath11k: refactor multiple MSI vector implementation 4ab4693f327a ath11k: use ATH11K_PCI_IRQ_DP_OFFSET for DP IRQ 01279bcd01d9 ath11k: add CE and ext IRQ flag to indicate irq_handler 87b4072d7ef8 ath11k: get msi_data again after request_irq is called 081e2d6476e3 ath11k: add hw_param for wakeup_mhi -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
