| Message ID | 20240518033923.5577-2-val@packett.cool (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | mtd: rawnand: rockchip: reject NVDDR timings when checked | expand |
Hi Val, I might propose a slightly different title which I think better describes the situation: "mtd: rawnand: rockchip: ensure NVDDR timings are rejected" val@packett.cool wrote on Sat, 18 May 2024 00:31:13 -0300: > .setup_interface first gets called with a negative "target" value Just as an FYI, the fact that it is negative is an implementation detail, but you mention the #define of the value below, so that's fine. > NAND_DATA_IFACE_CHECK_ONLY, in which case an error is expected > if the controller driver does not support the timing mode (NVDDR). > Here I would welcome two tags in order to get this backported as early as needed in stable kernels: Cc: stable@vger.kernel.org Fixes: a9ecc8c814e9 ("mtd: rawnand: Choose the best timings, NV-DDR included") > Signed-off-by: Val Packett <val@packett.cool> > --- > Hello everyone, first Linux patch from a long time FreeBSD person :) > > This was required to get the NAND controller to attach on the random > old RK3066 tablet I'm bringing up mainline on. Welcome! The fix looks right besides minor nits in the commit log. I'll probably take the v2 when it's out after -rc1 has been tagged. Thanks, Miquèl
diff --git a/drivers/mtd/nand/raw/rockchip-nand-controller.c b/drivers/mtd/nand/raw/rockchip-nand-controller.c index 7baaef69d..555804476 100644 --- a/drivers/mtd/nand/raw/rockchip-nand-controller.c +++ b/drivers/mtd/nand/raw/rockchip-nand-controller.c @@ -420,13 +420,13 @@ static int rk_nfc_setup_interface(struct nand_chip *chip, int target, u32 rate, tc2rw, trwpw, trw2c; u32 temp; - if (target < 0) - return 0; - timings = nand_get_sdr_timings(conf); if (IS_ERR(timings)) return -EOPNOTSUPP; + if (target < 0) + return 0; + if (IS_ERR(nfc->nfc_clk)) rate = clk_get_rate(nfc->ahb_clk); else
.setup_interface first gets called with a negative "target" value NAND_DATA_IFACE_CHECK_ONLY, in which case an error is expected if the controller driver does not support the timing mode (NVDDR). Signed-off-by: Val Packett <val@packett.cool> --- Hello everyone, first Linux patch from a long time FreeBSD person :) This was required to get the NAND controller to attach on the random old RK3066 tablet I'm bringing up mainline on. --- drivers/mtd/nand/raw/rockchip-nand-controller.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)