linux-kernel - [mtd:spi-mem-ecc 16/29] drivers/mtd/nand/ecc-mxic.c:652 mxic_ecc_finish_io_req_external() error: uninitialized symbol 'ret'.

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Message-ID: <202202100023.AD5wMMvp-lkp@intel.com>
Date:   Wed, 9 Feb 2022 20:58:57 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     kbuild@...ts.01.org, Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     lkp@...el.com, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [mtd:spi-mem-ecc 16/29] drivers/mtd/nand/ecc-mxic.c:652
 mxic_ecc_finish_io_req_external() error: uninitialized symbol 'ret'.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git spi-mem-ecc
head:   b556a86810e25b9d5a56da553bc65e5f4dcbedb6
commit: f46b431b115d2ead7ccf71da53a5d1993f0acfcd [16/29] mtd: nand: mxic-ecc: Support SPI pipelined mode
config: arm64-randconfig-m031-20220209 (https://download.01.org/0day-ci/archive/20220210/202202100023.AD5wMMvp-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>

vim +/ret +652 drivers/mtd/nand/ecc-mxic.c

48e6633a9fa2400 Miquel Raynal 2021-12-16  611  static int mxic_ecc_finish_io_req_external(struct nand_device *nand,
48e6633a9fa2400 Miquel Raynal 2021-12-16  612  					   struct nand_page_io_req *req)
48e6633a9fa2400 Miquel Raynal 2021-12-16  613  {
48e6633a9fa2400 Miquel Raynal 2021-12-16  614  	struct mxic_ecc_engine *mxic = nand_to_mxic(nand);
48e6633a9fa2400 Miquel Raynal 2021-12-16  615  	struct mxic_ecc_ctx *ctx = nand_to_ecc_ctx(nand);
48e6633a9fa2400 Miquel Raynal 2021-12-16  616  	int nents, step, ret;
48e6633a9fa2400 Miquel Raynal 2021-12-16  617  
48e6633a9fa2400 Miquel Raynal 2021-12-16  618  	if (req->mode == MTD_OPS_RAW)
48e6633a9fa2400 Miquel Raynal 2021-12-16  619  		return 0;
48e6633a9fa2400 Miquel Raynal 2021-12-16  620  
48e6633a9fa2400 Miquel Raynal 2021-12-16  621  	if (req->type == NAND_PAGE_WRITE) {
48e6633a9fa2400 Miquel Raynal 2021-12-16  622  		nand_ecc_restore_req(&ctx->req_ctx, req);
48e6633a9fa2400 Miquel Raynal 2021-12-16  623  		return 0;
48e6633a9fa2400 Miquel Raynal 2021-12-16  624  	}
48e6633a9fa2400 Miquel Raynal 2021-12-16  625  
48e6633a9fa2400 Miquel Raynal 2021-12-16  626  	/* Copy the OOB buffer and add room for the ECC engine status bytes */
48e6633a9fa2400 Miquel Raynal 2021-12-16  627  	mxic_ecc_add_room_in_oobbuf(ctx, ctx->oobwithstat, ctx->req->oobbuf.in);
48e6633a9fa2400 Miquel Raynal 2021-12-16  628  
48e6633a9fa2400 Miquel Raynal 2021-12-16  629  	sg_set_buf(&ctx->sg[0], req->databuf.in, req->datalen);
48e6633a9fa2400 Miquel Raynal 2021-12-16  630  	sg_set_buf(&ctx->sg[1], ctx->oobwithstat,
48e6633a9fa2400 Miquel Raynal 2021-12-16  631  		   req->ooblen + (ctx->steps * STAT_BYTES));
48e6633a9fa2400 Miquel Raynal 2021-12-16  632  	nents = dma_map_sg(mxic->dev, ctx->sg, 2, DMA_BIDIRECTIONAL);
48e6633a9fa2400 Miquel Raynal 2021-12-16  633  	if (!nents)
48e6633a9fa2400 Miquel Raynal 2021-12-16  634  		return -EINVAL;
48e6633a9fa2400 Miquel Raynal 2021-12-16  635  
48e6633a9fa2400 Miquel Raynal 2021-12-16  636  	mutex_lock(&mxic->lock);
48e6633a9fa2400 Miquel Raynal 2021-12-16  637  
48e6633a9fa2400 Miquel Raynal 2021-12-16  638  	for (step = 0; step < ctx->steps; step++) {
48e6633a9fa2400 Miquel Raynal 2021-12-16  639  		writel(sg_dma_address(&ctx->sg[0]) + (step * ctx->data_step_sz),
48e6633a9fa2400 Miquel Raynal 2021-12-16  640  		       mxic->regs + SDMA_MAIN_ADDR);
48e6633a9fa2400 Miquel Raynal 2021-12-16  641  		writel(sg_dma_address(&ctx->sg[1]) + (step * (ctx->oob_step_sz + STAT_BYTES)),
48e6633a9fa2400 Miquel Raynal 2021-12-16  642  		       mxic->regs + SDMA_SPARE_ADDR);
48e6633a9fa2400 Miquel Raynal 2021-12-16  643  		ret = mxic_ecc_process_data(mxic, ctx->req->type);
48e6633a9fa2400 Miquel Raynal 2021-12-16  644  		if (ret)
48e6633a9fa2400 Miquel Raynal 2021-12-16  645  			break;
48e6633a9fa2400 Miquel Raynal 2021-12-16  646  	}
48e6633a9fa2400 Miquel Raynal 2021-12-16  647  
48e6633a9fa2400 Miquel Raynal 2021-12-16  648  	mutex_unlock(&mxic->lock);
48e6633a9fa2400 Miquel Raynal 2021-12-16  649  
48e6633a9fa2400 Miquel Raynal 2021-12-16  650  	dma_unmap_sg(mxic->dev, ctx->sg, 2, DMA_BIDIRECTIONAL);
48e6633a9fa2400 Miquel Raynal 2021-12-16  651  
f46b431b115d2ea Miquel Raynal 2021-12-16 @652  	if (!ret) {

Hi Miquel,

This if statement is reversed.  No !

f46b431b115d2ea Miquel Raynal 2021-12-16  653  		nand_ecc_restore_req(&ctx->req_ctx, req);
f46b431b115d2ea Miquel Raynal 2021-12-16  654  		return ret;
f46b431b115d2ea Miquel Raynal 2021-12-16  655  	}
f46b431b115d2ea Miquel Raynal 2021-12-16  656  
48e6633a9fa2400 Miquel Raynal 2021-12-16  657  	/* Extract the status bytes and reconstruct the buffer */
48e6633a9fa2400 Miquel Raynal 2021-12-16  658  	mxic_ecc_extract_status_bytes(ctx);
48e6633a9fa2400 Miquel Raynal 2021-12-16  659  	mxic_ecc_reconstruct_oobbuf(ctx, ctx->req->oobbuf.in, ctx->oobwithstat);
48e6633a9fa2400 Miquel Raynal 2021-12-16  660  
48e6633a9fa2400 Miquel Raynal 2021-12-16  661  	nand_ecc_restore_req(&ctx->req_ctx, req);
48e6633a9fa2400 Miquel Raynal 2021-12-16  662  
48e6633a9fa2400 Miquel Raynal 2021-12-16  663  	return mxic_ecc_count_biterrs(mxic, nand);
48e6633a9fa2400 Miquel Raynal 2021-12-16  664  }

---
0-DAY CI Kernel Test Service, Intel Corporation
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