dmaengine: Fix spelling mistakes

Correct spelling mistakes in the DMA engine to improve readability
and clarity without altering functionality.

Signed-off-by: Amit Vadhavana <[e-mail]>
Reviewed-by: Kees Cook <[e-mail]>
Reviewed-by: Dave Jiang <[e-mail]>
Reviewed-by: Fenghua Yu <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/acpi-dma.c

···
 }
 
 /**
- * acpi_dma_parse_csrt - parse CSRT to exctract additional DMA resources
+ * acpi_dma_parse_csrt - parse CSRT to extract additional DMA resources
  * @adev:	ACPI device to match with
  * @adma:	struct acpi_dma of the given DMA controller
  *
···
  * found.
  *
  * Return:
- * 0, if no information is avaiable, -1 on mismatch, and 1 otherwise.
+ * 0, if no information is available, -1 on mismatch, and 1 otherwise.
  */
 static int acpi_dma_update_dma_spec(struct acpi_dma *adma,
 		struct acpi_dma_spec *dma_spec)

drivers/dma/altera-msgdma.c

···
 /**
  * struct msgdma_sw_desc - implements a sw descriptor
  * @async_tx: support for the async_tx api
- * @hw_desc: assosiated HW descriptor
+ * @hw_desc: associated HW descriptor
  * @node: node to move from the free list to the tx list
  * @tx_list: transmit list node
  */
···
 	 * of the DMA controller. The descriptor will get flushed to the
 	 * FIFO, once the last word (control word) is written. Since we
 	 * are not 100% sure that memcpy() writes all word in the "correct"
-	 * oder (address from low to high) on all architectures, we make
+	 * order (address from low to high) on all architectures, we make
 	 * sure this control word is written last by single coding it and
 	 * adding some write-barriers here.
 	 */

drivers/dma/amba-pl08x.c

···
 /*
  * Copyright (c) 2006 ARM Ltd.
  * Copyright (c) 2010 ST-Ericsson SA
- * Copyirght (c) 2017 Linaro Ltd.
+ * Copyright (c) 2017 Linaro Ltd.
  *
  * Author: Peter Pearse <[e-mail]>
  * Author: Linus Walleij <[e-mail]>

drivers/dma/at_hdmac.c

···
  * @regs: memory mapped register base
  * @clk: dma controller clock
  * @save_imr: interrupt mask register that is saved on suspend/resume cycle
- * @all_chan_mask: all channels availlable in a mask
+ * @all_chan_mask: all channels available in a mask
  * @lli_pool: hw lli table
  * @memset_pool: hw memset pool
  * @chan: channels table to store at_dma_chan structures
···
  * CTRLA is read in turn, next the DSCR is read a second time. If the two
  * consecutive read values of the DSCR are the same then we assume both refers
  * to the very same LLI as well as the CTRLA value read inbetween does. For
- * cyclic tranfers, the assumption is that a full loop is "not so fast". If the
+ * cyclic transfers, the assumption is that a full loop is "not so fast". If the
  * two DSCR values are different, we read again the CTRLA then the DSCR till two
  * consecutive read values from DSCR are equal or till the maximum trials is
  * reach. This algorithm is very unlikely not to find a stable value for DSCR.
···
 			break;
 
 		/*
-		 * DSCR has changed inside the DMA controller, so the previouly
+		 * DSCR has changed inside the DMA controller, so the previously
 		 * read value of CTRLA may refer to an already processed
 		 * descriptor hence could be outdated. We need to update ctrla
 		 * to match the current descriptor.

drivers/dma/bcm-sba-raid.c

···
  * number of hardware rings over one or more SBA hardware devices. By
  * design, the internal buffer size of SBA hardware device is limited
  * but all offload operations supported by SBA can be broken down into
- * multiple small size requests and executed parallely on multiple SBA
+ * multiple small size requests and executed parallelly on multiple SBA
  * hardware devices for achieving high through-put.
  *
  * The Broadcom SBA RAID driver does not require any register programming
···
 	u32 max_xor_srcs;
 	u32 max_resp_pool_size;
 	u32 max_cmds_pool_size;
-	/* Maibox client and Mailbox channels */
+	/* Mailbox client and Mailbox channels */
 	struct mbox_client client;
 	struct mbox_chan *mchan;
 	struct device *mbox_dev;

drivers/dma/bcm2835-dma.c

···
 	/* the last frame requires extra flags */
 	d->cb_list[d->frames - 1].cb->info |= finalextrainfo;
 
-	/* detect a size missmatch */
+	/* detect a size mismatch */
 	if (buf_len && (d->size != buf_len))
 		goto error_cb;
 

drivers/dma/ep93xx_dma.c

···
 	desc = container_of(tx, struct ep93xx_dma_desc, txd);
 
 	/*
-	 * If nothing is currently prosessed, we push this descriptor
+	 * If nothing is currently processed, we push this descriptor
 	 * directly to the hardware. Otherwise we put the descriptor
 	 * to the pending queue.
 	 */
···
  * @chan: channel
  * @sgl: list of buffers to transfer
  * @sg_len: number of entries in @sgl
- * @dir: direction of tha DMA transfer
+ * @dir: direction of the DMA transfer
  * @flags: flags for the descriptor
  * @context: operation context (ignored)
  *

drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.h

···
 	u32 rsv:32;
 	union {
 		struct {
-			u32 ssd:12; /* souce stride distance */
-			u32 sss:12; /* souce stride size */
+			u32 ssd:12; /* source stride distance */
+			u32 sss:12; /* source stride size */
 			u32 rsv1:8;
 		} sdf;
 		struct {
···
 #define QDMA_SER_DISABLE	(8) /* no notification */
 #define QDMA_SER_CTX		BIT(8) /* notification by FQD_CTX[fqid] */
 #define QDMA_SER_DEST		(2 << 8) /* notification by destination desc */
-#define QDMA_SER_BOTH		(3 << 8) /* soruce and dest notification */
+#define QDMA_SER_BOTH		(3 << 8) /* source and dest notification */
 #define QDMA_FD_SPF_ENALBE	BIT(30) /* source prefetch enable */
 
 #define QMAN_FD_VA_ENABLE	BIT(14) /* Address used is virtual address */

drivers/dma/hisi_dma.c

···
 		writel_relaxed(tmp, addr);
 
 		/*
-		 * 0 - dma should process FLR whith CPU.
+		 * 0 - dma should process FLR with CPU.
 		 * 1 - dma not process FLR, only cpu process FLR.
 		 */
 		addr = q_base + HISI_DMA_HIP09_DMA_FLR_DISABLE +

drivers/dma/idma64.c

···
 		desc->length += hw->len;
 	} while (i);
 
-	/* Trigger an interrupt after the last block is transfered */
+	/* Trigger an interrupt after the last block is transferred */
 	lli->ctllo |= IDMA64C_CTLL_INT_EN;
 
 	/* Disable LLP transfer in the last block */
···
 	if (!i)
 		return bytes;
 
-	/* The current chunk is not fully transfered yet */
+	/* The current chunk is not fully transferred yet */
 	bytes += desc->hw[--i].len;
 
 	return bytes - IDMA64C_CTLH_BLOCK_TS(ctlhi);

drivers/dma/idxd/submit.c

···
 	 * completing the descriptor will return desc to allocator and
 	 * the desc can be acquired by a different process and the
 	 * desc->list can be modified.  Delete desc from list so the
-	 * list trasversing does not get corrupted by the other process.
+	 * list traversing does not get corrupted by the other process.
 	 */
 	list_for_each_entry_safe(d, t, &flist, list) {
 		list_del_init(&d->list);

drivers/dma/ioat/init.c

···
 
 	op = IOAT_OP_XOR_VAL;
 
-	/* validate the sources with the destintation page */
+	/* validate the sources with the destination page */
 	for (i = 0; i < IOAT_NUM_SRC_TEST; i++)
 		xor_val_srcs[i] = xor_srcs[i];
 	xor_val_srcs[i] = dest;

drivers/dma/lgm/lgm-dma.c

···
  * If header mode is set in DMA descriptor,
  *   If bit 30 is disabled, HDR_LEN must be configured according to channel
  *     requirement.
- *   If bit 30 is enabled(checksum with heade mode), HDR_LEN has no need to
+ *   If bit 30 is enabled(checksum with header mode), HDR_LEN has no need to
  *     be configured. It will enable check sum for switch
  * If header mode is not set in DMA descriptor,
  *   This register setting doesn't matter

drivers/dma/ls2x-apb-dma.c

···
 #define LDMA_STOP		BIT(4) /* DMA stop operation */
 #define LDMA_CONFIG_MASK	GENMASK(4, 0) /* DMA controller config bits mask */
 
-/* Bitfields in ndesc_addr field of HW decriptor */
+/* Bitfields in ndesc_addr field of HW descriptor */
 #define LDMA_DESC_EN		BIT(0) /*1: The next descriptor is valid */
 #define LDMA_DESC_ADDR_LOW	GENMASK(31, 1)
 
-/* Bitfields in cmd field of HW decriptor */
+/* Bitfields in cmd field of HW descriptor */
 #define LDMA_INT		BIT(1) /* Enable DMA interrupts */
 #define LDMA_DATA_DIRECTION	BIT(12) /* 1: write to device, 0: read from device */
 

drivers/dma/mediatek/mtk-cqdma.c

···
 		/* setup dma channel */
 		cvd[i]->ch = c;
 
-		/* setup sourece, destination, and length */
+		/* setup source, destination, and length */
 		tlen = (len > MTK_CQDMA_MAX_LEN) ? MTK_CQDMA_MAX_LEN : len;
 		cvd[i]->len = tlen;
 		cvd[i]->src = src;
···
 	u32 i, min_refcnt = U32_MAX, refcnt;
 	unsigned long flags;
 
-	/* allocate PC with the minimun refcount */
+	/* allocate PC with the minimum refcount */
 	for (i = 0; i < cqdma->dma_channels; ++i) {
 		refcnt = refcount_read(&cqdma->pc[i]->refcnt);
 		if (refcnt < min_refcnt) {

drivers/dma/mediatek/mtk-hsdma.c

···
  * @pc_refcnt:		     Track how many VCs are using the PC
  * @lock:		     Lock protect agaisting multiple VCs access PC
  * @soc:		     The pointer to area holding differences among
- *			     vaious platform
+ *			     various platform
  */
 struct mtk_hsdma_device {
 	struct dma_device ddev;

drivers/dma/mv_xor.c

···
 		if (!mv_chan_is_busy(mv_chan)) {
 			u32 current_desc = mv_chan_get_current_desc(mv_chan);
 			/*
-			 * and the curren desc is the end of the chain before
+			 * and the current desc is the end of the chain before
 			 * the append, then we need to start the channel
 			 */
 			if (current_desc == old_chain_tail->async_tx.phys)
···
 	if (!mv_chan->dma_desc_pool_virt)
 		return ERR_PTR(-ENOMEM);
 
-	/* discover transaction capabilites from the platform data */
+	/* discover transaction capabilities from the platform data */
 	dma_dev->cap_mask = cap_mask;
 
 	INIT_LIST_HEAD(&dma_dev->channels);

drivers/dma/mv_xor.h

···
  * @common: common dmaengine channel object members
  * @slots_allocated: records the actual size of the descriptor slot pool
  * @irq_tasklet: bottom half where mv_xor_slot_cleanup runs
- * @op_in_desc: new mode of driver, each op is writen to descriptor.
+ * @op_in_desc: new mode of driver, each op is written to descriptor.
  */
 struct mv_xor_chan {
 	int			pending;

drivers/dma/mv_xor_v2.c

···
  * struct mv_xor_v2_sw_desc - implements a xor SW descriptor
  * @idx: descriptor index
  * @async_tx: support for the async_tx api
- * @hw_desc: assosiated HW descriptor
+ * @hw_desc: associated HW descriptor
  * @free_list: node of the free SW descriprots list
 */
 struct mv_xor_v2_sw_desc {

drivers/dma/nbpfaxi.c

···
 	/*
 	 * We could check config->slave_id to match chan->terminal here,
 	 * but with DT they would be coming from the same source, so
-	 * such a check would be superflous
+	 * such a check would be superfluous
 	 */
 
 	chan->slave_dst_addr = config->dst_addr;

drivers/dma/of-dma.c

···
  *
  * Finds a DMA controller with matching device node and number for dma cells
  * in a list of registered DMA controllers. If a match is found a valid pointer
- * to the DMA data stored is retuned. A NULL pointer is returned if no match is
+ * to the DMA data stored is returned. A NULL pointer is returned if no match is
  * found.
  */
 static struct of_dma *of_dma_find_controller(const struct of_phandle_args *dma_spec)
···
  *
  * This function can be used as the of xlate callback for DMA driver which wants
  * to match the channel based on the channel id. When using this xlate function
- * the #dma-cells propety of the DMA controller dt node needs to be set to 1.
+ * the #dma-cells property of the DMA controller dt node needs to be set to 1.
  * The data parameter of of_dma_controller_register must be a pointer to the
  * dma_device struct the function should match upon.
  *

drivers/dma/owl-dma.c

···
 	}
 
 	/*
-	 * Eventhough the DMA controller is capable of generating 4
+	 * Even though the DMA controller is capable of generating 4
 	 * IRQ's for DMA priority feature, we only use 1 IRQ for
 	 * simplification.
 	 */

drivers/dma/ppc4xx/adma.c

···
  */
 
 /*
- * This driver supports the asynchrounous DMA copy and RAID engines available
+ * This driver supports the asynchronous DMA copy and RAID engines available
  * on the AMCC PPC440SPe Processors.
  * Based on the Intel Xscale(R) family of I/O Processors (IOP 32x, 33x, 134x)
  * ADMA driver written by D.Williams.

drivers/dma/ppc4xx/dma.h

···
 
 /* Number of elements in the array with statical CDBs */
 #define	MAX_STAT_DMA_CDBS	16
-/* Number of DMA engines available on the contoller */
+/* Number of DMA engines available on the controller */
 #define DMA_ENGINES_NUM		2
 
 /* Maximum h/w supported number of destinations */

drivers/dma/ptdma/ptdma.h

···
 	/* Queue dma pool */
 	struct dma_pool *dma_pool;
 
-	/* Queue base address (not neccessarily aligned)*/
+	/* Queue base address (not necessarily aligned)*/
 	struct ptdma_desc *qbase;
 
 	/* Aligned queue start address (per requirement) */

drivers/dma/qcom/bam_dma.c

···
 	val |= BAM_EN;
 	writel_relaxed(val, bam_addr(bdev, 0, BAM_CTRL));
 
-	/* set descriptor threshhold, start with 4 bytes */
+	/* set descriptor threshold, start with 4 bytes */
 	writel_relaxed(DEFAULT_CNT_THRSHLD,
 			bam_addr(bdev, 0, BAM_DESC_CNT_TRSHLD));
 
···
 	for_each_sg(sgl, sg, sg_len, i)
 		num_alloc += DIV_ROUND_UP(sg_dma_len(sg), BAM_FIFO_SIZE);
 
-	/* allocate enough room to accomodate the number of entries */
+	/* allocate enough room to accommodate the number of entries */
 	async_desc = kzalloc(struct_size(async_desc, desc, num_alloc),
 			     GFP_NOWAIT);
 

drivers/dma/qcom/gpi.c

···
 
 	read_lock_irqsave(&gpii->pm_lock, pm_lock_flags);
 
-	/* move all submitted discriptors to issued list */
+	/* move all submitted descriptors to issued list */
 	spin_lock_irqsave(&gchan->vc.lock, flags);
 	if (vchan_issue_pending(&gchan->vc))
 		vd = list_last_entry(&gchan->vc.desc_issued,

drivers/dma/qcom/qcom_adm.c

···
 	/*
 	 * residue is either the full length if it is in the issued list, or 0
 	 * if it is in progress.  We have no reliable way of determining
-	 * anything inbetween
+	 * anything in between
 	 */
 	dma_set_residue(txstate, residue);
 

drivers/dma/sh/shdmac.c

···
 }
 
 /*
- * Find a slave channel configuration from the contoller list by either a slave
+ * Find a slave channel configuration from the controller list by either a slave
  * ID in the non-DT case, or by a MID/RID value in the DT case
  */
 static const struct sh_dmae_slave_config *dmae_find_slave(

drivers/dma/ste_dma40.h

···
 #define STE_DMA40_H
 
 /*
- * Maxium size for a single dma descriptor
+ * Maximum size for a single dma descriptor
  * Size is limited to 16 bits.
  * Size is in the units of addr-widths (1,2,4,8 bytes)
  * Larger transfers will be split up to multiple linked desc

drivers/dma/ste_dma40_ll.h

···
  * @lcsp02: Either maps to register lcsp0 if src or lcsp2 if dst.
  * @lcsp13: Either maps to register lcsp1 if src or lcsp3 if dst.
  *
- * This struct must be 8 bytes aligned since it will be accessed directy by
+ * This struct must be 8 bytes aligned since it will be accessed directly by
  * the DMA. Never add any none hw mapped registers to this struct.
  */
 

drivers/dma/tegra20-apb-dma.c

···
 
 	/*
 	 * If interrupt is pending then do nothing as the ISR will handle
-	 * the programing for new request.
+	 * the programming for new request.
 	 */
 	if (status & TEGRA_APBDMA_STATUS_ISE_EOC) {
 		dev_err(tdc2dev(tdc),

drivers/dma/xgene-dma.c

···
 	/* Initialize DMA channels software state */
 	xgene_dma_init_channels(pdma);
 
-	/* Configue DMA rings */
+	/* Configure DMA rings */
 	ret = xgene_dma_init_rings(pdma);
 	if (ret)
 		goto err_clk_enable;

drivers/dma/xilinx/xilinx_dpdma.c

···
  * @addr_ext: upper 16 bit of 48 bit address (next_desc and src_addr)
  * @next_desc: next descriptor 32 bit address
  * @src_addr: payload source address (1st page, 32 LSB)
- * @addr_ext_23: payload source address (3nd and 3rd pages, 16 LSBs)
+ * @addr_ext_23: payload source address (2nd and 3rd pages, 16 LSBs)
  * @addr_ext_45: payload source address (4th and 5th pages, 16 LSBs)
  * @src_addr2: payload source address (2nd page, 32 LSB)
  * @src_addr3: payload source address (3rd page, 32 LSB)
···
  * @vchan: virtual DMA channel
  * @reg: register base address
  * @id: channel ID
- * @wait_to_stop: queue to wait for outstanding transacitons before stopping
+ * @wait_to_stop: queue to wait for outstanding transactions before stopping
  * @running: true if the channel is running
  * @first_frame: flag for the first frame of stream
  * @video_group: flag if multi-channel operation is needed for video channels