Hi Greg, Thanks for feedback. > Subject: FAILED: patch "[PATCH] serial: 8250_em: Fix UART port type" failed > to apply to 5.4-stable tree > > > The patch below does not apply to the 5.4-stable tree. > If someone wants it applied there, or to any other stable or longterm tree, > then please email the backport, including the original git commit id to > <stable@xxxxxxxxxxxxxxx>. > > To reproduce the conflict and resubmit, you may use the following commands: > > git fetch > https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel > .org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Fstable%2Flinux.git%2F&data=05%7C01 > %7Cbiju.das.jz%40bp.renesas.com%7C05314cf919e7472983e208db29233b43%7C53d8257 > 1da1947e49cb4625a166a4a2a%7C0%7C0%7C638149003512485403%7CUnknown%7CTWFpbGZsb > 3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000 > %7C%7C%7C&sdata=eLxnB6PHZsrF3%2BUbZ4r90nz5se5HFps6MGCXbzNpudk%3D&reserved=0 > linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x > 32e293be736b853f168cd065d9cbc1b0c69f545d > # <resolve conflicts, build, test, etc.> git commit -s git send-email --to > '<stable@xxxxxxxxxxxxxxx>' --in-reply-to '167930353815674@xxxxxxxxx' -- > subject-prefix 'PATCH 5.4.y' HEAD^.. > > Possible dependencies: > > 32e293be736b ("serial: 8250_em: Fix UART port type") > 2a1dbd259e63 ("serial: 8250_em: Switch to use platform_get_irq()") OK, will send these fixes to 5.4 and similarly for 4.19 and 4.14. Cheers, Biju > > ------------------ original commit in Linus's tree ------------------ > > From 32e293be736b853f168cd065d9cbc1b0c69f545d Mon Sep 17 00:00:00 2001 > From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> > Date: Mon, 27 Feb 2023 11:41:46 +0000 > Subject: [PATCH] serial: 8250_em: Fix UART port type > > As per HW manual for EMEV2 "R19UH0040EJ0400 Rev.4.00", the UART IP found on > EMMA mobile SoC is Register-compatible with the general-purpose 16750 UART > chip. Fix UART port type as 16750 and enable 64-bytes fifo support. > > Fixes: 22886ee96895 ("serial8250-em: Emma Mobile UART driver V2") > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> > Link: > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > > diff --git a/drivers/tty/serial/8250/8250_em.c > b/drivers/tty/serial/8250/8250_em.c > index f8e99995eee9..d94c3811a8f7 100644 > --- a/drivers/tty/serial/8250/8250_em.c > +++ b/drivers/tty/serial/8250/8250_em.c > @@ -106,8 +106,8 @@ static int serial8250_em_probe(struct platform_device > *pdev) > memset(&up, 0, sizeof(up)); > up.port.mapbase = regs->start; > up.port.irq = irq; > - up.port.type = PORT_UNKNOWN; > - up.port.flags = UPF_BOOT_AUTOCONF | UPF_FIXED_PORT | UPF_IOREMAP; > + up.port.type = PORT_16750; > + up.port.flags = UPF_FIXED_PORT | UPF_IOREMAP | UPF_FIXED_TYPE; > up.port.dev = &pdev->dev; > up.port.private_data = priv; >
