diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-11-13 17:14:22 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2020-12-11 00:37:32 +0300 |
| commit | 875330f87a057a7d9831cd6a9dabf39185d15a92 (patch) | |
| tree | 195b8a58e08c91e91cd5c1a2e99a1abbbdf4a57f /drivers/mtd | |
| parent | 62e5c6c50992d1418eb9a6a8eaa51fa0b203b691 (diff) | |
| download | linux-875330f87a057a7d9831cd6a9dabf39185d15a92.tar.xz | |
mtd: onenand: Use mtd->oops_panic_write as condition
struct mtd_info has a flag oops_panic_write which is set when the write
operation is issued via the panic_write() callback. That allows controller
drivers to distinguish the panic write from a regular write.
Replace the open coded 'in_interrupt() | oops_in_progress' checks with a
check for that flag. in_interrupt() is an unrealiable indicator anyway as
it covers all sorts of atomic contexts not only hard and soft interrupt
service routines.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: Tudor Ambarus <tudor.ambarus@microchip.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: linux-mtd@lists.infradead.org
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201113141422.2214771-1-bigeasy@linutronix.de
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/onenand/onenand_omap2.c | 16 | ||||
| -rw-r--r-- | drivers/mtd/nand/raw/nand_legacy.c | 9 |
2 files changed, 13 insertions, 12 deletions
diff --git a/drivers/mtd/nand/onenand/onenand_omap2.c b/drivers/mtd/nand/onenand/onenand_omap2.c index d8c0bd002c2b..12825eb97938 100644 --- a/drivers/mtd/nand/onenand/onenand_omap2.c +++ b/drivers/mtd/nand/onenand/onenand_omap2.c @@ -371,12 +371,12 @@ static int omap2_onenand_read_bufferram(struct mtd_info *mtd, int area, bram_offset = omap2_onenand_bufferram_offset(mtd, area) + area + offset; /* - * If the buffer address is not DMA-able, len is not long enough to make - * DMA transfers profitable or panic_write() may be in an interrupt - * context fallback to PIO mode. + * If the buffer address is not DMA-able, len is not long enough to + * make DMA transfers profitable or if invoked from panic_write() + * fallback to PIO mode. */ if (!virt_addr_valid(buf) || bram_offset & 3 || (size_t)buf & 3 || - count < 384 || in_interrupt() || oops_in_progress) + count < 384 || mtd->oops_panic_write) goto out_copy; xtra = count & 3; @@ -418,12 +418,12 @@ static int omap2_onenand_write_bufferram(struct mtd_info *mtd, int area, bram_offset = omap2_onenand_bufferram_offset(mtd, area) + area + offset; /* - * If the buffer address is not DMA-able, len is not long enough to make - * DMA transfers profitable or panic_write() may be in an interrupt - * context fallback to PIO mode. + * If the buffer address is not DMA-able, len is not long enough to + * make DMA transfers profitable or if invoked from panic_write() + * fallback to PIO mode. */ if (!virt_addr_valid(buf) || bram_offset & 3 || (size_t)buf & 3 || - count < 384 || in_interrupt() || oops_in_progress) + count < 384 || mtd->oops_panic_write) goto out_copy; dma_src = dma_map_single(dev, buf, count, DMA_TO_DEVICE); diff --git a/drivers/mtd/nand/raw/nand_legacy.c b/drivers/mtd/nand/raw/nand_legacy.c index 2bcc03714432..eccc18b266d5 100644 --- a/drivers/mtd/nand/raw/nand_legacy.c +++ b/drivers/mtd/nand/raw/nand_legacy.c @@ -192,9 +192,10 @@ static void panic_nand_wait_ready(struct nand_chip *chip, unsigned long timeo) */ void nand_wait_ready(struct nand_chip *chip) { + struct mtd_info *mtd = nand_to_mtd(chip); unsigned long timeo = 400; - if (in_interrupt() || oops_in_progress) + if (mtd->oops_panic_write) return panic_nand_wait_ready(chip, timeo); /* Wait until command is processed or timeout occurs */ @@ -531,7 +532,7 @@ EXPORT_SYMBOL(nand_get_set_features_notsupp); */ static int nand_wait(struct nand_chip *chip) { - + struct mtd_info *mtd = nand_to_mtd(chip); unsigned long timeo = 400; u8 status; int ret; @@ -546,9 +547,9 @@ static int nand_wait(struct nand_chip *chip) if (ret) return ret; - if (in_interrupt() || oops_in_progress) + if (mtd->oops_panic_write) { panic_nand_wait(chip, timeo); - else { + } else { timeo = jiffies + msecs_to_jiffies(timeo); do { if (chip->legacy.dev_ready) { |